FCC ID: 2AKS8DX-BT18 BLUETOOTH MODULE

User Manual FCC ID: 2AKS8DX-BT18 Model Name: DX-BT18 Shenzhen DX-SMART Technology Co Ltd. DX-BT18 Dual Bluetooth Module Table Of Contents 1Overview .................................................................................................................14 2Module Default Parameters .................................................................................14 3Application Area....................................................................................................14 4Power consumption parameters...................................................................15 5Transparent Transmission Parameters ................................................................15 6Module Pin Description And Minimum Circuit Diagram..................................16 7Pin Function Description ......................................................................................17 8Detailed Description Of Function pins.................................................................18 9Dimensions ...........................................................................................................18 10LAYOUT Precautions...................................................................................19 11AT COMMAND...................................................................................................19 11.1 Test Instructions .....................................................................................21 11.2 Get The Software Version...................................................21 11.3 Set/Query Module Bluetooth MAC...............................................21 11.4 Set/Query Device Name.........................................................................21 11.5 Set/Query - Serial Port Baud Rate..........................................................22 11.6 Set/Query Pairing PIN............................................................................22 11.7 Query - UUID.............................................................23 11.8 Set -Service UUID..................................................................................23 11.9 Set- NOTIFY UUID\ WRITE UUID.....................................................24 11.10 Set -WRITE UUID ..............................................................................24 11.11 Disconnect The Llink....................................................................24 12Contact Us...........................................................................................................24 1Overview:

DX-BT18 dual-mode Bluetooth module is a dual-mode Bluetooth module (Dual-Mode) that is specially designed for smart wireless data transmission by Shenzhen DX-SMART Technology Co., Ltd. and follows the Bluetooth 4.2 standard protocol. DX-BT18 module applies to wireless data transmission field, uses BT4.2 Bluetooth chip + PCB printed antenna design, SOC chip embedded BT4.2 Dual-Mode protocol stack, supports data transmission of Windows, Linux, Android, iOS and other systems And applications, with industrial design, transmission distance, data stability, simple operation, high cost performance and technology leading edge. 2Module default parameters Bluetooth Protocol Bluetooth 4.2 BR/EDR+BLE

-

Working Frequency 2402-248MHz Communication Interface UART Power Supply 3.3V Communication distance 30-40M (Open and unobstructed environment) Physical Dimension 27mm x 13mm x 2.35 mm Bluetooth Authentication ROHS REACH FCC Bluetooth Name DX-BT18 Pairing Code 1234 (The SPP agreement is valid) Serial Port Parameters 96008 data bits1 stop bitNo checkNo flow control Service UUID Notify\Write UUID Write UUID FFE0 FFE1 FFE2 Storage temperature MIN:-40 - MAX:+140 Work temperature MIN:-20 - MAX:+85 Custom requirements If you have other special function requirements, you can contact us to customize the module. 3Application area:

DX-BT18 module supports BT4.2 SPP standard protocol, which can be paired with all Bluetooth-enabled desktop computers, notebooks, Andriod mobile phones and Bluetooth main module to achieve bidirectional data transmission and receiving; DX-BT18 module supports BT4.2 BLE protocol at the same time , Can connect directly with iOS device with BLE Bluetooth function, support background program resident operation. Successful application of BT18 module:

Bluetooth wireless data transmission;

mobile phones, computer peripherals;

hand-held POS devices;

Medical equipment wireless data transmission;

smart home control;

car detection OBD equipment;

Bluetooth printer Bluetooth Remote Control Toy Anti-lost device, LED light control 4Power consumption parameters:

DC-DC Discoverable Connected (BLE) Connected (SPP) Average Current 4.4 3.8 12 Unit mA mA mA 5Transparent transmission parameters SPP data throughput:

Android ->BT18 -> UART UART ->BT18 -> Android 14400 bytes/s 7500 bytes/s BAUD 115200 BLE data throughput:

IPhone 6 ->BT18 -> UART UART ->BT18 -> IPhone 6 Baud rate 115200 Baud rate 115200 Connection interval (ms) APP Serial packet size (bytes) Transmission interval (ms) 15 300 20 Connection interval (ms) Serial packet size (bytes) Transmission interval (ms) 15 300 50 Throughput (bytes/s) 5000 Throughput (bytes/s) 5040 Characteristic Write method Write without Response Note: This table parameter is for reference only and does not represent the maximum data throughput that the module can support. 6.Module pin description and minimum circuit diagram:

7Pin function description:

Pin number 1 2 3 4 5 6 7 8 Pin name UART_TX UART_RX UART_CTS UART_RTS GPIO4 GPIO5 VPP ICE Pin description Serial data output Serial data input Vacant Vacant Programmable input and output port Programmable input and output port VPP Firmware upgrade port 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 HVOUT HVIN RESETB VCC GND GND NC USBDP USBDN NC NC NC GND GND GPIO26 GPIO28 GPIO23 GPIO25 SCL SDA GPIO24 GPIO27 GPIO28 GND GND Programmable input and output port Vacant Low level reset, at least 5ms Power supply V3.3 GND GND NC NC NC Vacant Vacant NC GND GND Disconnect pin (200ms low electrical pulse off) LED light pin (unconnected flashing, connection is always on) Bluetooth connection indicator (not connected low, connection high) AT command switch pin (low AT command mode) NC NC Programmable input and output port Programmable input and output port Programmable input and output port GND GND 8Detailed description of function pins:

1 P24 pin (GPIO28): LED indicator pin Used to indicate the status of the Bluetooth module. Correspondence between the LED flashing mode and the Bluetooth module status is shown in the following table:

LED display Module status Uniformly slow flashing (800ms-on, 800ms-off) standby mode always brigh Connection Status 2. P26 pin (GPIO25): AT command switching pin Pin status Connect to GND Module status Enter AT command mode NC Module enters transparent mode 3. P25 pin (GPIO23): Connection status indicator Pin status Low output Output high Module status standby mode Connection Status 4. P23 pin (GPIO26): Connect interrupt pin (module is in valid connection state) Pin status No action Module status Connection Status Input 200ms low level pulse Interrupt connection, module enters standby 9Dimensions:

10LAYOUT Precautions:

The DX-BT18 dual-mode Bluetooth module works in the 2.4G wireless band. It should try to avoid the influence of various factors on the wireless transceiver. Pay attention to the following points:

1. The product shell surrounding the Bluetooth module to avoid the use of metal, when using part of the metal shell, should try to make the module antenna part away from the metal part. 2. The internal metal connecting wires or metal screws of the product should be far away from the antenna part of the module. 3. The antenna part of the module should be placed around the PCB of the carrier board. It is not allowed to be placed in the board and the carrier board under the antenna is to be milled empty. The direction parallel to the antenna does not allow copper to be laid or routed. It is also a good choice to directly expose the antenna part out of the carrier board. 4. It is recommended to use insulating material for isolation at the module mounting position on the substrate. For example, put a block of screen printing (TopOver Lay) at this position. 11. AT COMMAND 1. When sending AT commands, you need to pull module P26 low to enter the AT command mode. At other times, the commands do not respond. 2. AT command, which belongs to the character line instruction, is parsed according to the line

(AT command must be returned by carriage return or \r\n, hexadecimal number is 0D0A) 3. The AT command only supports uppercase. The instruction prefix is AT+ and can be divided into parameter setting instructions and read instructions. 4. Set the instruction format: AT+<CMD>=<PARAM> The operation succeeds. Return:+<CMD>=<PARAM>\r\n OK\r\n Fail Back:ERR\r\n 5. Read instruction format:

AT+<CMD>? Operation succeeds: +<CMD>=<PARAM>\r\nFailed to return ERR\r\n 6. instruction error or not support, return ERR\r\n AT com man d form at exam ple

(figu re 1 is AT test com man d, Figure 2 is to change the Bluetooth name to 1234):

1Test instructions:

Function Command Response Description Test instructions AT+TEST\r\n

\r\n OK\r\n 2Get The Software Version:

Function Command Response Description Query version number AT+VERS?\r\n +VERS=<version>\r\n

<version > Software OK\r\n version number Note: The version will be different depending on different modules and customization requirements. 3Set/Query Module Bluetooth MAC:

Function Command Response Description Query module MAC AT+ADSS?\r\n

+ADSS=<addr>\r\n

<addr> 12-bit MAC address address code Set the module MAC AT+ADSS=<LA

+ADSS=<addr>\r\n address DDR>\r\n OK\r\n Note: The SPP and BLE Bluetooth address codes of the module are the same address code. 4Set/Query Device Name:

Function Command Response Description Query Module device AT+NAME?\r\n +NAME=<name>\r\n <name> device Name Name Up to 19 bytes Set the module device AT+NAME=<na

+NAME=<name>\r\n Default NAME:BT18 name me>\r\n OK\r\n Note: The Bluetooth names of the module's SPP and BLE are the same. Each time the name is changed, the names of the SPP and BLE are the same. Example:

1. Send Settings:

AT+NAME=DX-BT18\r\n Set module device nameDX-BT18 return

+NAME=DX-BT18\r\n Set module device nameDX-BT18 successed OK\r\n 2. Send inquiry AT+NAME?\r\n Query module device name return

+NAME=BT18r\n Return module device name BT18 5Set/Query - Serial Port Baud Rate:

Function Command Response Description Query module baud AT+BAUD?\r\n +BAUD=<baud>\r\n

<baud> Baud rate Set the module baud AT+BAUD=<ba

+BAUD=<baud>\r\n corresponding serial ud>\r\n OK\r\n number 1:9600 2:19200 3:38400 4:115200 Default BAUD:1(9600) Note: The module must be re-powered after setting the baud rate, enabling the new baud rate for data communication and AT command resolution. Example: Setting the Serial Port Baud Rate: 38400 1. Send Settings:

AT+BAUD=3 \r\n return

+BAUD=3\r\n OK\r\n 2. Send inquiry AT+BAUD?\r\n return

+BAUD=3\r\n OK\r\n 6Set/Query Pairing PIN:

Function Command Response Description Query module SPP AT+PIN?\r\n

+PIN=<pin>\r\n

<pin> pairing PIN pairing code Default PIN:1234 Set module SPP pairing AT+PIN=<pin>\r

+PIN=<pin>\r\n code

\n OK\r\n 7QueryUUID Function Command Response Description Query module UUID AT+UUID?\r\n

+UUID=<service>,<noti

<service> service fy>, UUID

<write>\r\n

<notify> notify UUID

<write> write UUID NOTEModule default UUID: SERVICE UUID FFE0, NOTIFY UUID FFE1,WRITE UUID FFE2 (When setting UUID, the last two bits need to be swapped with the first two bits) Example:

1. Send Settings:

AT+UUID?\r\n Query module UUID return

+UUID= e0ff,e1ff,e2ffr\n OK\r\n 8SetService UUID Function Command Response Description Query service UUID AT+SERV=<serv

+ SERV=<service>\r\n

<service> service ice>\r\n UUID ExampleSet the service UUID to: FE01 (When setting, the last two bits need to be swapped with the first two bits) 1. Send Settings:

AT+SERV =01FE \r\n return

+SERV=01fe r\n OK\r\n 9SetNOTIFY UUID\ WRITE UUID Function Command Response Description SET NOTIFY UUID AT+NOTIFY=<

+SERV=<notify>\r\n

<notify> notify UUID notify >\r\n OK\r\n Note: This channel is NOTIFY and WRITE (It can be read or written) ExampleSet the NOTIFY UUID to: FE02(When setting, the last two bits need to be swapped with the first two bits) 1. Send Settings AT+NOTIFY=02FE \r\n return

+NOTIFY=02fe r\n OK\r\n 10SetWRITE UUID Function Command Response Description Set WRITE UUID AT+WRITE?=<n

+WRITE?=<write>\r\n

<write> write UUID otify >\r\n OK\r\n 11Disconnect The Link:

Function Command Response Description Disconnect the link AT+DIS?\r\n

\r\n OK\r\n You can disconnect the module when the module is connected 12Contact us Shen Zhen DX-SMART Technology Co., Ltd. Address511 ,Building C, Yuxing Technology Park, Yuxing Chuanggu, Bao'an District, Shenzhen, China Tel: 0755-2997 8125 Fax: 0755-2997 8369 Website: http://www.szdx-smart.com/

Single Module FCC Statement 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. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. If the FCC identification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following:

Contains Transmitter Module FCC ID: 2AKS8DX-BT18 Or Contains FCC ID: 2AKS8DX-BT18 When the module is installed inside another device, the user manual of the host must contain below warning statements;

1. 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.

(2) This device must accept any interference received, including interference that may cause undesired operation. 2. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. The devices must be installed and used in strict accordance with the manufacturer's instructions as described in the user documentation that comes with the product. Any company of the host device which install this modular with Single modular approval should perform the test of radiated emissionand spurious emission according to FCC part 15C : 15.247 and 15.209 requirement,Only if the test result comply with FCC part 15C : 15.247 and 15.209 requirementthen the host can be sold legally.

Project No: STS1903052 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS FCC ID: 2AKS8DX-BT18 Model Name: DX-BT18 Photo 1 BT Antenna Photo 2

Project No: STS1903052 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS FCC ID: 2AKS8DX-BT18 Model Name: DX-BT18 Photo 1 BT Antenna Photo 2

Label W:5mm BLUETOOTH MODULE Model name DX-BT18 FCC ID: 2AKS8DX-BT18 W:10mm Note:The label is silk-screen on the sample Note: The label is silk-screen on the sample Note: The label is silk-screen on the sample L:30mm L:30mm

2019-03-26 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 Authority to Act as Agent On our behalf, I appoint Shenzhen STS Test Services Co., Ltd., 1/F., Building B, Zhuoke Science Park, No.190, Chongqing Road, Fuyong Street, Baoan District, Shenzhen, Guangdong,China (Name of Agent company name and address) to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commissions regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, still resides with SHEN ZHEN DX-SMART TECHNOLOGY CO.,LTD Room 511, Bldg C, Yuxing Technology Park, Gushu Second Road, Baoan District, Shenzhen, China (Applicant Name and address) Sincerely, Name: zhou guanzhi Title: Manager Company: SHEN ZHEN DX-SMART TECHNOLOGY CO.,LTD

Differences Description We SHEN ZHEN DX-SMART TECHNOLOGY CO.,LTD state:

Product BLUETOOTH MODULE Model Name DX-BT18, DX-BT18-X Brand Name N/A FCC ID: 2AKS8DX-BT18 The electrical circuit design, layout, components used and internal wiring for above models are identical, only different in model name. Signatory Date: 2019-03-26 Signature Name: zhou guanzhi Title: Sales Manager Company: SHEN ZHEN DX-SMART TECHNOLOGY CO.,LTD Address: Room 511, Bldg C, Yuxing Technology Park, Gushu Second Road, Baoan District, Shenzhen, China

2019-03-26 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2AKS8DX-BT18 Product Name: BLUETOOTH MODULE Model name: DX-BT18, DX-BT18-X Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commissions rules, we hereby request that the following documents be held confidential:

(List here the documents for which you are seeking confidentiality for example ) Schematics Block diagram Operation description These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. Sincerely, Name: zhou guanzhi Title: Manager Company: SHEN ZHEN DX-SMART TECHNOLOGY CO.,LTD

Single Modular approval Declaration letter We ,SHEN ZHEN DX-SMART TECHNOLOGY CO.,LTD apply Single modular approval for Product Name: BLUETOOTH MODULE Model: DX-BT18, DX-BT18-X FCC ID: 2AKS8DX-BT18 According to 996369 D01 Module Equip Auth Guide v01r04 and 15.212 requirement:

1) 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 beon the module assembly;

Answer:Yes,both side is shielded 2) 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;

Answer:Yes,All inputs to the modules are buffered through logic or microprocessor inputs. 3)The modular transmitter must have its own power supply regulation. Answer:Yes,A low drop out regulator is used for modular power supply regulation. 4)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 Sections 15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b);

Answer:Yes,Device is equipped with Integral PCB antenna.

(5)The module must demonstrate compliance in a stand-alone configuration;

Answer:Yes,distance between modular and all AEs are longer than 10cm,refer to setup photo.

(6)The module must be labelled with its permanently affixed FCC ID label, or use an electronic display (See KDB Publication 784748 about labelling requirements);

Answer:Yes,The modular has a permanent fixed label, and below statement was listed in the User Manual;The host device must be labeled to display the FCC ID of the module Contains FCC ID: 2AKS8DX-BT18

(7)The module must comply with all specific rules applicable to the transmitter including all the conditions provided in the integration instructions by the grantee;

Answer:Yes,The module comply with all specific rules applicable to the transmitter including all the conditions provided in the integration instructions by the grantee, Refer to test report and user manual .

(8)The module must comply with RF exposure requirements Answer:Yes,Transmitter meets MPE calculation of 47 CFR 1.1307 . Refer to MPEReports and Refer to modular installation manual Date: 2019-03-26 Signature Name: zhou guanzhi Title: Sales Manager Company: SHEN ZHEN DX-SMART TECHNOLOGY CO.,LTD Address: Room 511, Bldg C, Yuxing Technology Park, Gushu Second Road, Baoan District, Shenzhen, China