FCC ID: ROW-61821CE WiFi 11ac + BT5.0 Module

SPECIFCATION CDW-61821CE-00 WiFi 11ac + BT 5.0 Module Spec Software Customer Approve Date Design Check Approve Version Date V1.0 2020.08.15 CHINA DRAGON TECHNOLOGY LIMI TED Address: Shenzhen Baoan District Shajing Street Nanpu Road Linpo Keng Oyster three first Industrial Park B4 building (86 755) 81449957

(86 755) 81449967 E-mail: Info@cdtech.cn Http://www.cdtech.cn WiFi Module CDW-61821CE-00 Reversion History Version Date Modification 1.0 2020.08.15 First release Page 1 WiFi Module CDW-61821CE-00 1. Overview The 61821CE-00 is a single-die wireless local area network (WLAN) and Bluetooth

(BT) combination solution to support 1 1 IEEE 802.11a/b/g/n/ac WLAN standards and BT 5.0 + HS, enabling seamless integration of WLAN/BT and low-energy technology. 2. Features Support a low-power PCIe 2.1 interface for WLAN and a USB2.0 interface for BT Support 802.11ac 1x1, Wave-2 compliant with MU-MIMO STA mode Support WLAN 2.4GHz and 5GHz band channels Supports 20 MHz/40 MHz at 2.4 GHz and supports 20 MHz, 40 MHz, or 80 MHz a t 5 GHz Support PCIe LTR/L1.OFF state supported Supports Bluetooth 5.0 system Bluetooth 5.0 Dual Mode support(Simultaneous LE and BR/EDR) Supports multipel Low Energy states Page 2 WiFi Module CDW-61821CE-00 3. General Specification Model CDW-61821CE-00 Product Name WLAN 11a/b/g/n/ac PCIe 1T1R + Bluetooth 5.0 module Major Chipset RTL8821CE -CG Standard 802.11a/b/g/n/ac Modulation Method BPSK/ QPSK/ 16-QAM/ 64-QAM/256-QAM Frequency Band 2.4GHz and 5GHz ISM Band WiFi Interface BT Interface PCIe USB Operating Temperature

-20 C ~ 65 C Storage Temperature

-40 C ~ 85C Humidity Dimension 5% to 90% maximum 16x12x2.0 (LxWxH) 0.2mm 4. Electrical Characteristics symbol Parameter Minimum Typical Maximum Units 3.3V 3.3V supply voltage 3.0 Current 3.3V rating current

3.3

3.6 1000 V mA Page 3 5. Layout Recommendation(Unit: mm) WiFi Module CDW-61821CE-00 Page 4 6. Pin Description WiFi Module CDW-61821CE-00 NO. Name Type Description 1 2 3 4 5 6 7 8 9 NC NC NC 3.3V 3.3V GND NFC_RF_DIS NFC_INT NFC_CLK 10 NFC_DATA P P No connect RF I/O port (2.4G and 5G) No connect 3.3V INPUT 3.3V INPUT Ground connections No connect No connect No connect No connect Page 5 NC11NC22NC333.3V43.3V56GND1NFC_RF_DIS7NFC_INT8NFC_CLK9NFC_DATA10COEX_RXD11COEX_TXD12COEX313NC414NC515NC616GND217NC18NC719GND320NC21NC22GND423HST_WAKE_BT24NC825GND526SLP_CLK27WL_DIS_N28PCIE_WAKEN29PCIE_CLKREQN30PCIE_PERSTN31GND632PCIE_RCLK_N33PCIE_RCLK_P34GND735PCIE_TX_N36PCIE_TX_P37GND838PCIE_RX_N39PCIE_RX_P40GND941NC42NC943NC44NC45NC46NC47NC48NC49NC50NC51NC52NC53NC54NC55NC56GND57PCM_SYNC58PCM_IN59PCM_OUT60PCM_CLK61GND962BT_DIS_N63LED_BT64WL_LED6566NCHST_WAKE_BT67GND1068USB_DM69USB_DP70GND11713.3V723.3V73GND1274GND1375GND1476GND1577GND1678GND1779GND1880GND1981GND2082GND2183GND2284GND2385GND2486GND2587GND2688GND2789GND2890GND2991GND3092GND3193GND3294GND3395GND3496 COEX_RXD COEX_TXD COEX3 NC NC NC GND NC NC GND NC NC GND HST_WAKE_DEV NC GND SLP_CLK WL_DIS_N PCIE_WAKEN PCIE_CLKREQN PCIE_PERSTN GND PCIE_RCLK_N PCIE_RCLK_P GND PCIE_TX_N PCIE_TX_P GND PCIE_RX_N PCIE_RX_P GND NC NC NC NC NC NC 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 WiFi Module CDW-61821CE-00 I/O GPIO6 I/O GPIO12 No connect No connect No connect I/O GPIO7 No connect No connect No connect No connect Ground connections Ground connections Ground connections I I I I/O I/O I I I O O GPIO13 No connect Ground connections External 32.768KHz input Enable pin for WL device(GPIO9) PCIe wake signalactive low PCIe clock request(active low) PCIe host indication to reset the device Ground connections PCIe differential Clock input N PCIe differential Clock input P Ground connections PCIe Transmit Data N PCIe Transmit Data P Ground connections PCIe Receive Data N PCIe Receive Data P Ground connections No connect No connect No connect No connect No connect No connect Page 6 NC NC NC NC NC NC NC NC NC GND PCM_SYNC PCM_IN PCM_OUT PCM_CLK GND BT_DIS_N BT_LED WL_LED NC HST_WAKE_BT GND USB_DM USB_DP GND 3.3V 3.3V GND GND GND GND GND GND GND GND GND GND 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 WiFi Module CDW-61821CE-00 No connect No connect No connect No connect No connect No connect No connect No connect No connect Ground connections I/O PCM_SYNC (input/output)(GPIO2) I O I I O PCM_IN (input)(GPIO0) PCM_OUT (output)(GPIO1) PCM_CLK (input)(GPIO3) Ground connections Enable pin for BT device(GPIO7) BT_LED O WL_LED No connect I GPIO13 Ground connections I/O USB Serial Differential Data Minus I/O USB Serial Differential Data Plus Ground connections P P 3.3V INPUT 3.3V INPUT Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Page 7 WiFi Module CDW-61821CE-00 Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections GND GND GND GND GND GND GND GND GND GND GND GND GND GND 84 85 86 87 88 89 90 91 92 93 94 95 96 G1~G25 7. Suplier Secondary supplier list Material name Supplier brand WIFI IC Realtek RF_Switch QWave Richwave Crystal PCBA FK , TKD, JWT A, O, I,F Diplexer TDK, ACX, Walsin, GLEAD, Sunlord Power inductance Sunlord, CHILISIN, SAMWHA Capacitance SAMSUNG /EYANG resistance UniOhm /YAGEO Page 8 WiFi Module CDW-61821CE-00 8. Physical photo 61821CE-00 61821CE-01 61821CE-10 61821CE-11 Page 9 9. Recommended Reflow Profile Referred IPC/JEDEC standard. Peak Temperature : <250C Number of Times : 2 times WiFi Module CDW-61821CE-00 Page 10 10. Packing information 362mm WiFi Module CDW-61821CE-00 Vacuum packing AL BAG ANTI-STATIC Color of plastic disc: blue A roll of 1000pcs(20pcs) inner box K3K:

33.5cm*34.7cm*7cm ESD CAUTION A box of 1000 PCS The 61821CE-00 is ESD (electrostatic discharge) sensitive device and may be damaged with ESD or spike voltage. Although 61821CE-00 is with built-in ESD protection circuitry, please handle with care to avoid the permanent malfunction or the performance degradation. carton K=A:

36.4*35.7*37.5cm A case of 5000 PCS Page 11 FCC WARNING WiFi Module CDW-61821CE-00 FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This device and its antenna(s) must not be co-located or operating in conjunction with any other antenna or transmitter. 15.105 Information to the user.

(b) For a Class B digital device or peripheral, the instructions furnished the user shall include the following or similar statement, placed in a prominent location in the text of the manual:

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20 cm between the radiator and your body. Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. The availability of some specific channels and/or operational frequency bands are country dependent and are firmware programmed at the factory to match the intended destination. The firmware setting is not accessible by the end user. The final end product must be labelled in a visible area with the following:

Contains Transmitter Module FCC ID is: ROW-61821CE. Page 12 Requirement per KDB996369 D03 WiFi Module CDW-61821CE-00 2.2 List of applicable FCC rules List the FCC rules that are applicable to the modular transmitter. These are the rules that specifically establish the bands of operation, the power, spurious emissions, and operating fundamental frequencies. DO NOT list compliance to unintentional-radiator rules (Part 15 Subpart B) since that is not a condition of a module grant that is extended to a host manufacturer. See also Section 2.10 below concerning the need to notify host manufacturers that further testing is required.3 Explanation: This module meets the requirements of FCC part 15C(15.247).it specifically establish the 6dB Bandwidth,, Peak Output Power, Radiated Spurious Emission, Power Spectral Density, Restricted Band of Operation and Band Edge (Out of Band Emissions) &Measurement, This module meets the requirements of FCC part 15E(15.407).it specifically establish the 6dB Bandwidth, 26 dB and 99%

Emission Bandwidth, Peak Output Power, Radiated Spurious Emission, Power Spectral Density, Restricted Band of Operation and Band Edge (Out of Band Emissions) , Frequency Stability Measurement 2.3 Summarize the specific operational use conditions Describe use conditions that are applicable to the modular transmitter, including for example any limits on antennas, etc. For example, if point-to-point antennas are used that require reduction in power or compensation for cable loss, then this information must be in the instructions. If the use condition limitations extend to professional users, then instructions must state that this information also extends to the host manufacturers instruction manual. In addition, certain information may also be needed, such as peak gain per frequency band and minimum gain, specifically for master devices in 5 GHz DFS bands. Explanation: The EUT has two PIFA antenna, Antenna A support 5GHz WIFI and BT, Antenna B support 2.4GHz WIFI, Yes, the module have a unique antenna connector, The antenna gain is 2.4G WIFI:2.27dBi, BT: 0.97dBi, 5.1G: 2.53dBi, 5.3G WIFI:1.11dBi, 5.8G WIFI:2.01dBi. 2.4 Limited module procedures If a modular transmitter is approved as a limited module, then the module manufacturer isresponsible for approving the host environment that the limited module is used with. The manufacturer of a limited module must describe, both in the filing and in the installation instructions, the alternative means that the limited module manufacturer uses to verify that the host meets the necessary requirements to satisfy the module limiting conditions. A limited module manufacturer has the flexibility to define its alternative method to address the conditions that limit the initial approval, such as: shielding, minimum signaling amplitude, buffered modulation/data inputs, or power supply regulation. The alternative method could include that the limited module manufacturer reviews detailed test data or host designs prior to giving the host manufacturer approval. This limited module procedure is also applicable for RF exposure evaluation when it is necessary to demonstrate compliance in a specific host. The module manufacturer must state how control of the product into which the modular transmitter will be installed will be maintained such that full compliance of the product is always ensured. For additional hosts other than the specific host Page 13 WiFi Module originally granted with a limited module, a Class II permissive change is required on the module CDW-61821CE-00 grant to register the additional host as a specific host also approved with the module. Explanation: The module is a single module. 2.5 Trace antenna designs For a modular transmitter with trace antenna designs, see the guidance in Question 11 of KDB Publication 996369 D02 FAQ Modules for Micro-Strip Antennas and traces. The integration information shall include for the TCB review the integration instructions for the following aspects:

layout of trace design, parts list (BOM), antenna, connectors, and isolation requirements. a) Information that includes permitted variances (e.g., trace boundary limits, thickness, length, width, shape(s), dielectric constant, and impedance as applicable for each type of antenna);

b) Each design shall be considered a different type (e.g., antenna length in multiple(s) of frequency, the wavelength, and antenna shape (traces in phase) can affect antenna gain and must be considered);

c) The parameters shall be provided in a manner permitting host manufacturers to design the printed circuit (PC) board layout;

d) Appropriate parts by manufacturer and specifications;

e) Test procedures for design verification; and f) Production test procedures for ensuring compliance. The module grantee shall provide a notice that any deviation(s) from the defined parameters of the antenna trace, as described by the instructions, require that the host product manufacturer must notify the module grantee that they wish to change the antenna trace design. In this case, a Class II permissive change application is required to be filed by the grantee, or the host manufacturer can take responsibility through the change in FCC ID (new application) procedure followed by a Class II permissive change application. Explanation: Yes, The module with trace antenna designs, and This manual has been shown the layout of trace design,, antenna, connectors, and isolation requirements. 2.6 RF exposure considerations It is essential for module grantees to clearly and explicitly state the RF exposure conditions that permit a host product manufacturer to use the module. Two types of instructions are required for RF exposure information: (1) to the host product manufacturer, to define the application conditions

(mobile, portable xx cm from a persons body); and (2) additional text needed for the host product manufacturer to provide to end users in their end-product manuals. If RF exposure statements and use conditions are not provided, then the host product manufacturer is required to take responsibility of the module through a change in FCC ID (new application). Explanation: This module complies with FCC RF radiation exposure limits set forth for an uncontrolled environment, This equipment should be installed and operated with a minimum distance of 20 centimeters between the radiator and your body." This module is designed to comply with the FCC statement, FCC ID is: ROW-61821CE. Page 14 2.7 Antennas WiFi Module CDW-61821CE-00 A list of antennas included in the application for certification must be provided in the instructions. For modular transmitters approved as limited modules, all applicable professional installer instructions must be included as part of the information to the host product manufacturer. The antenna list shall also identify the antenna types (monopole, PIFA, dipole, etc. (note that for example an omni-directional antenna is not considered to be a specific antenna type)). For situations where the host product manufacturer is responsible for an external connector, for example with an RF pin and antenna trace design, the integration instructions shall inform the installer that unique antenna connector must be used on the Part 15 authorized transmitters used in the host product. The module manufacturers shall provide a list of acceptable unique connectors. Explanation: The EUT has two PIFA antenna, Yes, the module have a unique antenna connector, The antenna gain is 2.4G WIFI:2.27dBi, BT: 0.97dBi, 5.1G: 2.53dBi, 5.3G WIFI:1.11dBi, 5.8G WIFI:2.01dBi. 2.8 Label and compliance information Grantees are responsible for the continued compliance of their modules to the FCC rules. This includes advising host product manufacturers that they need to provide a physical or e-label stating Contains FCC ID with their finished product. See Guidelines for Labeling and User Information for RF Devices KDB Publication 784748. Explanation:The host system using this module, should have label in a visible area indicated the following texts: "Contains FCC ID: ROW-61821CE 2.9 Information on test modes and additional testing requirements5 Additional guidance for testing host products is given in KDB Publication 996369 D04 Module Integration Guide. Test modes should take into consideration different operational conditions for a stand-alone modular transmitter in a host, as well as for multiple simultaneously transmitting modules or other transmitters in a host product. The grantee should provide information on how to configure test modes for host product evaluation for different operational conditions for a stand-alone modular transmitter in a host, versus with multiple, simultaneously transmitting modules or other transmitters in a host. Grantees can increase the utility of their modular transmitters by providing special means, modes, or instructions that simulates or characterizes a connection by enabling a transmitter. This can greatly simplify a host manufacturers determination that a module as installed in a host complies with FCC requirements. Explanation: WiFiRanger, A LinOra Company can increase the utility of our modular transmitters by providing instructions that simulates or characterizes a connection by enabling a transmitter. 2.10 Additional testing, Part 15 Subpart B disclaimer The grantee should include a statement that the modular transmitter is only FCC authorized for the specific rule parts (i.e., FCC transmitter rules) listed on the grant, and that the host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. If the grantee markets their product as being Part 15 Page 15 WiFi Module Subpart B compliant (when it also contains unintentional-radiator digital circuity), then the grantee CDW-61821CE-00 shall provide a notice stating that the final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed. Explanation: The module without unintentional-radiator digital circuity, so the module does not require an evaluation by FCC Part 15 Subpart B. The host shoule be evaluated by the FCC Subpart B. Page 16

SPECIFCATION CDW-61821CE-00 WiFi 11ac + BT4.2 Module Spec Software Customer Approve Date Design Check Approve Version Date V1.0 2020.08.15 CHINA DRAGON TECHNOLOGY LIMI TED B4

(86 755) 81449957

(86 755) 81449967 E-mail: Info@cdtech.cn Http://www.cdtech.cn WiFi Module CDW-61821CE-00 Reversion History Version Date Modification 1.0 2020.08.15 First release Page 1 WiFi Module CDW-61821CE-00 The 61821CE-00 is a single-die wireless local area network (WLAN) and Bluetooth

(BT) combination solution to support 1 1 IEEE 802.11a/b/g/n/ac WLAN standards and BT 4.2 + HS, enabling seamless integration of WLAN/BT and low-energy technology. 1. Overview 2. Features Support a low-power PCIe 2.1 interface for WLAN and a USB2.0 interface for BT Support 802.11ac 1x1, Wave-2 compliant with MU-MIMO STA mode Support WLAN 2.4GHz and 5GHz band channels Supports 20 MHz/40 MHz at 2.4 GHz and supports 20 MHz, 40 MHz, or 80 MHz at 5 GHz Support IEEE 802.11h DFS,TPC,Spectrum Measurement Support PCIe LTR/L1.OFF state supported Supports Bluetooth 4.2 system (Compatible with Bluetooth v2.1+EDR) Bluetooth 4.0 Dual Mode support(Simultaneous LE and BR/EDR) Supports multipel Low Energy states Page 2 WiFi Module CDW-61821CE-00 3. General Specification Model CDW-61821CE-00 Major Chipset RTL8821CE-CG Standard 802.11a/b/g/n/ac Product Name WLAN 11a/b/g/n/ac PCIe 1T1R + Bluetooth 4.2 module Modulation Method BPSK/ QPSK/ 16-QAM/ 64-QAM/256-QAM Frequency Band 2.4GHz and 5GHz ISM Band WiFi Interface BT Interface PCIe USB Operating Temperature

-20 C ~ 65 C Storage Temperature

-40 C ~ 85C Humidity Dimension 5% to 90% maximum 16x12x2.0 (LxWxH) 0.2mm 4. Electrical Characteristics symbol Parameter Minimum Typical Maximum Units 3.3V 3.3V supply voltage Current 3.3V rating current 3.0

3.3

3.6 1000 V mA Page 3 WiFi Module CDW-61821CE-00 5. Layout Recommendation(Unit: mm) Page 4 6. Pin Description WiFi Module CDW-61821CE-00 Name Description RF I/O port (2.4G and 5G) Type P P No connect No connect 3.3V INPUT 3.3V INPUT No connect No connect No connect No connect Ground connections NO. 1 2 3 4 5 6 7 8 9 NC NC NC 3.3V 3.3V GND NFC_RF_DIS NFC_INT NFC_CLK 10 NFC_DATA Page 5 NC11NC22NC333.3V43.3V56GND1NFC_RF_DIS7NFC_INT8NFC_CLK9NFC_DATA10COEX_RXD11COEX_TXD12COEX313NC414NC515NC616GND217NC18NC719GND320NC21NC22GND423HST_WAKE_BT24NC825GND526SLP_CLK27WL_DIS_N28PCIE_WAKEN29PCIE_CLKREQN30PCIE_PERSTN31GND632PCIE_RCLK_N33PCIE_RCLK_P34GND735PCIE_TX_N36PCIE_TX_P37GND838PCIE_RX_N39PCIE_RX_P40GND941NC42NC943NC44NC45NC46NC47NC48NC49NC50NC51NC52NC53NC54NC55NC56GND57PCM_SYNC58PCM_IN59PCM_OUT60PCM_CLK61GND962BT_DIS_N63LED_BT64WL_LED6566NCHST_WAKE_BT67GND1068USB_DM69USB_DP70GND11713.3V723.3V73GND1274GND1375GND1476GND1577GND1678GND1779GND1880GND1981GND2082GND2183GND2284GND2385GND2486GND2587GND2688GND2789GND2890GND2991GND3092GND3193GND3294GND3395GND3496 COEX_RXD COEX_TXD COEX3 NC NC NC GND NC NC GND NC NC GND NC GND GND NC NC NC NC NC NC HST_WAKE_DEV SLP_CLK WL_DIS_N PCIE_WAKEN PCIE_CLKREQN PCIE_PERSTN GND PCIE_RCLK_N PCIE_RCLK_P GND PCIE_TX_N PCIE_TX_P GND PCIE_RX_N PCIE_RX_P 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 WiFi Module CDW-61821CE-00 I/O GPIO6 I/O GPIO12 No connect No connect No connect No connect No connect I/O GPIO7 I I No connect No connect GPIO13 No connect Ground connections Ground connections Ground connections Ground connections External 32.768KHz input I Enable pin for WL device(GPIO9) I/O I/O PCIe wake signalactive low PCIe clock request(active low) PCIe host indication to reset the device Ground connections PCIe differential Clock input N PCIe differential Clock input P I I I O O Ground connections PCIe Transmit Data N PCIe Transmit Data P Ground connections PCIe Receive Data N PCIe Receive Data P Ground connections No connect No connect No connect No connect No connect No connect Page 6 No connect WiFi Module CDW-61821CE-00 No connect No connect No connect No connect No connect No connect No connect No connect I/O I O I I O Ground connections PCM_SYNC (input/output)(GPIO2) PCM_IN (input)(GPIO0) PCM_OUT (output)(GPIO1) PCM_CLK (input)(GPIO3) Ground connections Enable pin for BT device(GPIO7) BT_LED No connect O WL_LED I I/O USB Serial Differential Data Minus Ground connections GPIO13 I/O USB Serial Differential Data Plus P Ground connections 3.3V INPUT P 3.3V INPUT Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 GND PCM_SYNC PCM_IN PCM_OUT PCM_CLK GND BT_DIS_N BT_LED WL_LED NC HST_WAKE_BT GND USB_DM USB_DP NC NC NC NC NC NC NC NC NC GND 3.3V 3.3V GND GND GND GND GND GND GND GND GND GND Page 7 84 85 86 87 88 89 90 91 92 93 94 95 96 G1~G25 GND GND GND GND GND GND GND GND GND GND GND GND GND GND 7. Suplier WiFi Module CDW-61821CE-00 Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Ground connections Secondary supplier list Material name Supplier brand WIFI IC Realtek RF_Switch QWave Richwave Crystal PCBA Diplexer FK , TKD, JWT A, O, I,F TDK, ACX, Walsin, GLEAD, Sunlord Power inductance Sunlord, CHILISIN, SAMWHA Capacitance SAMSUNG /EYANG resistance UniOhm /YAGEO Page 8 WiFi Module CDW-61821CE-00 8. Physical photo 61821CE-00 61821CE-01 61821CE-10 61821CE-11 Page 9 9. Recommended Reflow Profile Referred IPC/JEDEC standard. Peak Temperature : <250C Number of Times :

es WiFi Module CDW-61821CE-00 Page 10 10. Packing information WiFi Module CDW-61821CE-00 Vacuum packing AL BAG ANTI-STATIC Color of plastic disc: blue A roll of 1000pcs(20pcs) inner box K3K:

33.5cm*34.7cm*7cm ESD CAUTION A box of 1000 PCS carton K=A:

36.4*35.7*37.5cm A case of 5000 PCS The 61821CE-00 is ESD (electrostatic discharge) sensitive device and may be damaged with ESD or spike voltage. Although 61821CE-00 is with built-in ESD protection circuitry, please handle with care to avoid the permanent malfunction or the performance degradation. 362mm Page 11 WiFi Module CDW-61821CE-00 FCC WARNING FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This device and its antenna(s) must not be co-located or operating in conjunction with any other antenna or transmitter. 15.105 Information to the user.

(b) For a Class B digital device or peripheral, the instructions furnished the user shall include the following or similar statement, placed in a prominent location in the text of the manual:

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20 cm between the radiator and your body. Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. The availability of some specific channels and/or operational frequency bands are country dependent and are firmware programmed at the factory to match the intended destination. The firmware setting is not accessible by the end user. The final end product must be labelled in a visible area with the following:

Contains Transmitter Module ROW-61821CE Page 12 WiFi Module CDW-61821CE-00 Requirement per KDB996369 D03 2.2 List of applicable FCC rules List the FCC rules that are applicable to the modular transmitter. These are the rules that specifically establish the bands of operation, the power, spurious emissions, and operating fundamental frequencies. DO NOT list compliance to unintentional-radiator rules (Part 15 Subpart B) since that is not a condition of a module grant that is extended to a host manufacturer. See also Section 2.10 below concerning the need to notify host manufacturers that further testing is required.3 Explanation: This module meets the requirements of FCC part 15C(15.247).it specifically establish the 6dB Bandwidth,, Peak Output Power, Radiated Spurious Emission, Power Spectral Density, Restricted Band of Operation and Band Edge (Out of Band Emissions) &Measurement, This module meets the requirements of FCC part 15E(15.407).it specifically establish the 6dB Bandwidth, 26 dB and 99%

Emission Bandwidth, Peak Output Power, Radiated Spurious Emission, Power Spectral Density, Restricted Band of Operation and Band Edge (Out of Band Emissions) , Frequency Stability Measurement 2.3 Summarize the specific operational use conditions Describe use conditions that are applicable to the modular transmitter, including for example any limits on antennas, etc. For example, if point-to-point antennas are used that require reduction in power or compensation for cable loss, then this information must be in the instructions. If the use condition limitations extend to professional users, then instructions must state that this information also extends to the host manufacturers instruction manual. In addition, certain information may also be needed, such as peak gain per frequency band and minimum gain, specifically for master devices in 5 GHz DFS bands. Explanation: The EUT has two external antenna, Antenna A support 5GHz WIFI and BT, Antenna B support 2.4GHz WIFI, Yes, the module have a unique antenna connector, The antenna gain is 5dBi. 2.4 Limited module procedures If a modular transmitter is approved as a limited module, then the module manufacturer isresponsible for approving the host environment that the limited module is used with. The manufacturer of a limited module must describe, both in the filing and in the installation instructions, the alternative means that the limited module manufacturer uses to verify that the host meets the necessary requirements to satisfy the module limiting conditions. A limited module manufacturer has the flexibility to define its alternative method to address the conditions that limit the initial approval, such as: shielding, minimum signaling amplitude, buffered modulation/data inputs, or power supply regulation. The alternative method could include that the limited module manufacturer reviews detailed test data or host designs prior to giving the host manufacturer approval. This limited module procedure is also applicable for RF exposure evaluation when it is necessary to demonstrate compliance in a specific host. The module manufacturer must state how control of the product into which the modular transmitter will be installed will be maintained such that full compliance of the product is always ensured. For additional hosts other than the specific host Page 13 originally granted with a limited module, a Class II permissive change is required on the module grant to register the additional host as a specific host also approved with the module. WiFi Module CDW-61821CE-00 Explanation: The module is a single module. 2.5 Trace antenna designs For a modular transmitter with trace antenna designs, see the guidance in Question 11 of KDB Publication 996369 D02 FAQ Modules for Micro-Strip Antennas and traces. The integration information shall include for the TCB review the integration instructions for the following aspects:

layout of trace design, parts list (BOM), antenna, connectors, and isolation requirements. a) Information that includes permitted variances (e.g., trace boundary limits, thickness, length, width, shape(s), dielectric constant, and impedance as applicable for each type of antenna);

b) Each design shall be considered a different type (e.g., antenna length in multiple(s) of frequency, the wavelength, and antenna shape (traces in phase) can affect antenna gain and must be considered);

c) The parameters shall be provided in a manner permitting host manufacturers to design the printed circuit (PC) board layout;

d) Appropriate parts by manufacturer and specifications;

e) Test procedures for design verification; and f) Production test procedures for ensuring compliance. The module grantee shall provide a notice that any deviation(s) from the defined parameters of the antenna trace, as described by the instructions, require that the host product manufacturer must notify the module grantee that they wish to change the antenna trace design. In this case, a Class II permissive change application is required to be filed by the grantee, or the host manufacturer can take responsibility through the change in FCC ID (new application) procedure followed by a Class II permissive change application. Explanation: Yes, The module with trace antenna designs, and This manual has been shown the layout of trace design,, antenna, connectors, and isolation requirements. 2.6 RF exposure considerations It is essential for module grantees to clearly and explicitly state the RF exposure conditions that permit a host product manufacturer to use the module. Two types of instructions are required for RF exposure information: (1) to the host product manufacturer, to define the application conditions

(mobile, portable xx cm from a persons body); and (2) additional text needed for the host product manufacturer to provide to end users in their end-product manuals. If RF exposure statements and use conditions are not provided, then the host product manufacturer is required to take responsibility of the module through a change in FCC ID (new application). Explanation: This module complies with FCC RF radiation exposure limits set forth for an uncontrolled environment, This equipment should be installed and operated with a minimum distance of 20 centimeters between the radiator and your body." This module is designed to comply with the FCC statement, FCC ID is: ROW-61821CE. Page 14 WiFi Module CDW-61821CE-00 2.7 Antennas A list of antennas included in the application for certification must be provided in the instructions. For modular transmitters approved as limited modules, all applicable professional installer instructions must be included as part of the information to the host product manufacturer. The antenna list shall also identify the antenna types (monopole, PIFA, dipole, etc. (note that for example an omni-directional antenna is not considered to be a specific antenna type)). For situations where the host product manufacturer is responsible for an external connector, for example with an RF pin and antenna trace design, the integration instructions shall inform the installer that unique antenna connector must be used on the Part 15 authorized transmitters used in the host product. The module manufacturers shall provide a list of acceptable unique connectors. Explanation: The EUT has two external antenna, Yes, the module have a unique antenna connector, The antenna gain is 5dBi. 2.8 Label and compliance information Grantees are responsible for the continued compliance of their modules to the FCC rules. This includes advising host product manufacturers that they need to provide a physical or e-label stating Contains FCC ID with their finished product. See Guidelines for Labeling and User Information for RF Devices KDB Publication 784748. Explanation:The host system using this module, should have label in a visible area indicated the following texts: "Contains FCC ID: ROW-61821CE 2.9 Information on test modes and additional testing requirements5 Additional guidance for testing host products is given in KDB Publication 996369 D04 Module Integration Guide. Test modes should take into consideration different operational conditions for a stand-alone modular transmitter in a host, as well as for multiple simultaneously transmitting modules or other transmitters in a host product. The grantee should provide information on how to configure test modes for host product evaluation for different operational conditions for a stand-alone modular transmitter in a host, versus with multiple, simultaneously transmitting modules or other transmitters in a host. Grantees can increase the utility of their modular transmitters by providing special means, modes, or instructions that simulates or characterizes a connection by enabling a transmitter. This can greatly simplify a host manufacturers determination that a module as installed in a host complies with FCC requirements. Explanation: WiFiRanger, A LinOra Company can increase the utility of our modular transmitters by providing instructions that simulates or characterizes a connection by enabling a transmitter. 2.10 Additional testing, Part 15 Subpart B disclaimer The grantee should include a statement that the modular transmitter is only FCC authorized for the specific rule parts (i.e., FCC transmitter rules) listed on the grant, and that the host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. If the grantee markets their product as being Part 15 Subpart B compliant (when it also contains unintentional-radiator digital circuity), then the grantee Page 15 WiFi Module CDW-61821CE-00 shall provide a notice stating that the final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed. Explanation: The module without unintentional-radiator digital circuity, so the module does not require an evaluation by FCC Part 15 Subpart B. The host shoule be evaluated by the FCC Subpart B. Page 16

CHINA DRAGON TECHNOLOGY LIMITED 2024.03.26 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION EUT NAME: WiFi 11ac + BT5.0 Module Trademark: /

MODEL : CDW-61821CE-00,CDW-61821CE-01,CDW-61821CE-10, CDW-61821CE-11 FCC ID: ROW-61821CE To Whom It May Concern:

We, the undersigned, hereby authorize Shenzhen BCTC Testing Co., Ltd to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Clients signature:

Clients name / title : Song xiaoyue /Manager Contact information / address: B4 Bidg. haosan No.1 lndustry Park, Shajing street, B Shenzhen, China

(CHINA DRAGON TECHNOLOGY LIMITED)

(2024.3.26) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for (FCC ID: ROW-61821CE)

[CHINA DRAGON TECHNOLOGY LIMITED (the applicant) certifies that the equipment for which authorization is sought is not covered equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely,

(Applicant signature)

(Applicant printed name) Song xiaoyue i

(CHINA DRAGON TECHNOLOGY LIMITED)

(2024.3.26) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (FCC ID: ROW-61821CE)

[CHINA DRAGON TECHNOLOGY LIMITED] (the applicant) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing covered equipment. Sincerely,

(Applicant signature)

(Applicant printed name) Song xiaoyue i

CHINA DRAGON TECHNOLOGY LIMITED March 27, 2024 Federal Communications Commission Equipment Authorization Division 7435 Oakland Mills Road Columbia, MD 21046 USA Attn: OET Dept. Ref: FCC Class II Permissive change for FCC ID: ROW-61821CE Applicant: CHINA DRAGON TECHNOLOGY LIMITED Dear Examiner, This is to request a Class II Permissive change for FCC ID: ROW-61821CE originally granted on 04/02/2021 (date). Changes The following changes are made to the product: the limit module is changed to an independent module, the Bluetooth version is upgraded from 4.2 to 5.0, the RF chip board is unchanged, the product antenna is replaced, and the product name is modified. Original: new Reports updates on conduction and radiation, radiation spurious and radiation sideband, Bluetooth power, product name, and DFS retest The FCC ID number remains unchanged I attest that the certified device will not be capable of ad-hoc mode operation outside of the grant conditions. FCC Class II PC request letter Rev1.1--NEW Sincerely, Name: Song xiaoyue Title: Manager Date: 2024.3.27 Signature of applicant CHINA DRAGON TECHNOLOGY LIMITED FCC Class II PC request letter Rev1.1--NEW

CHINA DRAGON TECHNOLOGY LIMITED 2024.03.26 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: WiFi 11ac + BT5.0 Module Trademark: /

MODEL : CDW-61821CE-00,CDW-61821CE-01,CDW-61821CE-10, CDW-61821CE-11 FCC ID: ROW-61821CE To Whom It May Concern:

This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the

- Software security operational description required to be submitted with this application be permanently withheld from public review. The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Please contact me if there is any information you may need. Sincerely, Clients signature:

Clients name / title : Song xiaoyue /Manager Contact information / address: B4 Bidg. haosan No.1 lndustry Park, Shajing street, B Shenzhen, China

CHINA DRAGON TECHNOLOGY LIMITED Model Difference 2024-03-27 Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA RE: LETTER OF MODEL DIFFERENCE To Whom It May Concern:

EUT NAME: WiFi 11ac + BT5.0 Module FCC ID: ROW-61821CE MODEL : CDW-61821CE-00, CDW-61821CE-01,CDW-61821CE-10, CDW-61821CE-11 All the model are the same circuit and RF module, except model names. Regards Sincerely Clients signature Clients name / title : Song xiaoyue/ Manager Contact information / address: B4 Bidg. haosan No.1 lndustry Park, Shajing street, B Shenzhen, China

CHINA DRAGON TECHNOLOGY LIMITED Federal Communications Commission Equipment Authorization Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2024/03/27 Subject; Modular Transmitter Application Company name: CHINA DRAGON TECHNOLOGY LIMITED FCC ID: ROW-61821CE Dear Sir/Madam, This letter includes the FCC application requirements for Modular Transmitter Approval Request for;-

FCC KDB 996369 D01 Module Certification Guide v02; and FCC KDB 996369 D03 OEM Manual v01 In accordance with 47CFR 15.212 Modular Transmitters and KDB 996369 D01 Module Equip Auth Guide v02. FCC ID: ROW-61821CE has been examined against the following requirements. Requirement per 15.212 and KDB 996369 D01 The radio elements must have the radio frequency circuitry shielded. Physical components and tuning capacitor(s) may be located external to the shield, but must be on the module assembly. The module must have buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal. The module must contain power supply regulation on the module. The module must contain a permanently attached antenna, or contain a unique antenna connector, and be marketed and operated only with specific antenna(s), per 15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b). The module must demonstrate compliance in a stand-alone configuration. The module must be labeled with its permanently affixed FCC ID label, or use an electronic display (see KDB Publication 784748). The module must comply with all specific rules applicable to the transmitter, including all the conditions provided in the integration instructions by the grantee. Explanation from Grantee

(do not write yes/no, but explain why product complies/how it is achieved) Yes, It has a shield Yes, This module have buffered modulation/data inputs . Yes,The module have power supply regulation, The supply voltage is DC 3.3V. Yes, the module have a unique antenna connector Yes, this module is a standalone module. Yes,The host system have label in a visible area indicated the following texts: "Contains FCC ID: ROW-61821CE Yes, This module meets the requirements of FCC part 15C(15.247).it specifically establish the 6dB Bandwidth,, Peak Output Power, Radiated Spurious Emission, Power Spectral Density, Restricted Band of Operation and Band Edge (Out of Band Emissions)

&Measurement, This module meets the FCC Modular Approval Request CHINA DRAGON TECHNOLOGY LIMITED The module must comply with RF exposure requirements requirements of FCC part 15E(15.407).it specifically establish the 6dB Bandwidth, 26 dB and 99% Emission Bandwidth, Peak Output Power, Radiated Spurious Emission, Power Spectral Density, Restricted Band of Operation and Band Edge (Out of Band Emissions) , Frequency Stability Measurement Yes,This module complies with FCC RF radiation exposure limits set forth for an uncontrolled environment, This equipment should be installed and operated with a minimum distance of 20 centimeters between the radiator and your body." This module is designed to comply with the FCC statement, FCC ID is: ROW-61821CE Integration Instructions for host product manufacturers The following items are submitted in support of application for Modular Transmitter FCC ID as noted above as required by the FCC KDB 996369 D03 OEM Manual v01. These items are provided as integration instructions for host product manufacturers (e.g., OEM instruction manual) to use when integrating a module in a host product. Any requirements that are not applicable to the Module are as indicated below. Summary of requirements and Checklist.Refer to the KDB for description of the complete requirements;

KDB Ref Sect Requirements of KDB 996369 D03 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 List of applicable FCC rules Summarize the specific operational use conditions Limited module procedures Trace antenna designs RF exposure considerations Antennas Label and compliance information Information on test modes and additional testing requirements Additional testing, Part 15 Subpart B disclaimer User Manual Page Number reference Page 13 Page 13 Page 13 Page 14 Page 14 Page 15 Page 15 Page 15 Page 15 Name: Song xiaoyue Title: Manager Signature of applicant :

FCC Modular Approval Request Date: 2024/03/26

CHINA DRAGON TECHNOLOGY LIMITED U.S. Agent Designation for Service of Process

(Applicant and U.S. Agent are Separate Parties) TO:

Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 ATTENTION: FCC Certification Section 2.911(d)(7) Information Designated U.S. Agent Company Name: Baihetian Innovative Solutions FRN: 0033401605 Contact Name: Kenneth Young Street Address: 6837 Chase Rd City/Province/Zip: Dearborn, MI 48126 Telephone No: 313-395-3113 Email: ken.young@baihetiansolutions.com This letter is to confirm that we (the Designated U.S. Agent) have accepted the responsibility to act as the Designated U.S. Agent for Service of Process as required by section 47 CFR 2.911(d)(7) on behalf of the Applicant noted below. U.S. Agent Signature:

Mar 2024 Date: Mar 26, 2024 Signed by (Printed Name/Title): Kenneth Young/Manager The Applicant acknowledges that they must maintain an agent for no less than one year after terminating all marketing and importation OR the conclusion of any Commission-related proceeding involving the equipment. The applicant further acknowledges their responsibility to inform the FCC whenever the Designated U.S. Agent information above changes. Applicant Company name: CHINA DRAGON TECHNOLOGY LIMITED Grantee Code: ROW FCC ID: ROW-61821CE Contact Name: Song xiaoyue Street Address: B4 Bidg. haosan No.1 lndustry Park, Shajing street, B City/Province/Zip: Shenzhen, China Telephone No: 13510082761 Email: songxiaoyue@cdtech.cn FRN: 0022344337 Applicant Signature:

Date: 2024/03/26 Signed by (Printed Name/Title): Song xiaoyue / Manager

CHINA DRAGON TECHNOLOGY LIMITED 2021.03.22 Eurofins MET Labs 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern:

We, the undersigned, hereby authorize Shenzhen BCTC Testing Co., Ltd to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Clients signature:

Clients name / title : Liu Xiaodong Contact information / address: B4 Bidg.haosan No.1 lndustry Park,Shajing street,B, Shenzhen, China

CHINA DRAGON TECHNOLOGY LIMITED 2021.03.22 Eurofins MET Labs 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR EUT NAME: WiFi 11ac + BT4.2 Module Trademark: N/A MODEL : CDW-61821CE-00, CDW-61821CE-01,CDW-61821CE-10, CDW-

61821CE-11 FCC ID: ROW-61821CE To Whom It May Concern:

This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the

- Block Diagram

- Schematics

- Operational Description

software security requirement required to be submitted with this application be permanently withheld from public review. The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Please contact me if there is any information you may need. Sincerely, Clients signature:

Clients name / title : Liu Xiaodong/Manager Contact information / address: B4 Bidg.haosan No.1 lndustry Park,Shajing street,B, Shenzhen, China

CHINA DRAGON TECHNOLOGY LIMITED Model Difference 2021-03-22 EUT NAME: Insight mini FCC ID: ROW-61821CE MODEL : CDW-61821CE-00, CDW-61821CE-01,CDW-61821CE-10, CDW-61821CE-11 All the model are the same circuit and RF module, except model names. Regards Sincerely Clients signature Clients name / title : Liu Xiaodong/ Manager Contact information / address: B4 Bidg. haosan No.1 lndustry Park, Shajing street, B Shenzhen, China

CHINA DRAGON TECHNOLOGY LIMITED Federal Communications Commission Equipment Authorization Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2021/03/22 Subject; Modular Transmitter Application Company name: CHINA DRAGON TECHNOLOGY LIMITED FCC ID: ROW-61821CE Dear Sir/Madam, This letter includes the FCC application requirements for Modular Transmitter Approval Request for;-

FCC KDB 996369 D01 Module Certification Guide v02; and FCC KDB 996369 D03 OEM Manual v01 In accordance with 47CFR 15.212 Modular Transmitters and KDB 996369 D01 Module Equip Auth Guide v02. FCC ID: ROW-61821CE has been examined against the following requirements. Requirement per 15.212 and KDB 996369 D01 The radio elements must have the radio frequency circuitry shielded. Physical components and tuning capacitor(s) may be located external to the shield, but must be on the module assembly. The module must have buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal. The module must contain power supply regulation on the module. The module must contain a permanently attached antenna, or contain a unique antenna connector, and be marketed and operated only with specific antenna(s), per 15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b). The module must demonstrate compliance in a stand-alone configuration. The module must be labeled with its permanently affixed FCC ID label, or use an electronic display (see KDB Publication 784748). The module must comply with all specific rules applicable to the transmitter, including all the conditions provided in the integration instructions by the grantee. Explanation from Grantee

(do not write yes/no, but explain why product complies/how it is achieved) Yes, It has a shield Yes, This module have buffered modulation/data inputs . Yes,The module have power supply regulation, The supply voltage is DC 3.3V. Yes, the module have a unique antenna connector Yes, The report lists all the tests. Yes,The host system have label in a visible area indicated the following texts: "Contains FCC ID: ROW-61821CE Yes, This module meets the requirements of FCC part 15C(15.247).it specifically establish the 6dB Bandwidth,, Peak Output Power, Radiated Spurious Emission, Power Spectral Density, Restricted Band of Operation and Band Edge (Out of Band Emissions)

&Measurement, This module meets the FCC Modular Approval Request CHINA DRAGON TECHNOLOGY LIMITED requirements of FCC part 15E(15.407).it specifically establish the 6dB Bandwidth, 26 dB and 99% Emission Bandwidth, Peak Output Power, Radiated Spurious Emission, Power Spectral Density, Restricted Band of Operation and Band Edge (Out of Band Emissions) , Frequency Stability Measurement Yes,This module complies with FCC RF radiation exposure limits set forth for an uncontrolled environment, This equipment should be installed and operated with a minimum distance of 20 centimeters between the radiator and your body." This module is designed to comply with the FCC statement, FCC ID is: ROW-61821CE The module must comply with RF exposure requirements Integration Instructions for host product manufacturers The following items are submitted in support of application for Modular Transmitter FCC ID as noted above as required by the FCC KDB 996369 D03 OEM Manual v01. These items are provided as integration instructions for host product manufacturers (e.g., OEM instruction manual) to use when integrating a module in a host product. Any requirements that are not applicable to the Module are as indicated below. Summary of requirements and Checklist.Refer to the KDB for description of the complete requirements;

KDB Ref Sect 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 List of applicable FCC rules Summarize the specific operational use conditions Limited module procedures Trace antenna designs RF exposure considerations Antennas Label and compliance information Information on test modes and additional testing requirements Additional testing, Part 15 Subpart B disclaimer User Manual Page Number reference Page 13 Page 13 Page 13 Page 14 Page 14 Page 15 Page 15 Page 15 Requirements of KDB 996369 D03 Page 15 2.10 Name: Liu Xiaodong Date: 2021/03/22 Title: Manager Signature of applicant :

FCC Modular Approval Request