FCC ID: 2ANDL-MDWBRCU1 Smart Kit

MDWBRCU1 Adapter Board Datasheet Version: 20230621 Online Version Contents Contents 1 Overview 1 1.1 Features ......................................................................................... 1 1.2 Applications .................................................................................. 1 2 MDWBRCU1 interfaces 3 2.1 Dimensions and footprint ................................................................ 3 3 Electrical parameters 5 3.1 Electrical parameters ..................................................................... 5 3.2 Radio frequency (RF) power ............................................................ 5 3.3 Power consumption in working mode ................................................ 6 4 RF parameters 8 4.1 Basic RF features ........................................................................... 8 4.2 Transmitter (TX) performance .......................................................... 8 5 Appendix: Statement 10 I 1 Overview 1 Overview MDWBRCU1 is a Wi-Fi and Bluetooth Low Energy (LE) combo adapter board devel-

oped by Tuya Smart. It consists of a highly integrated wireless RF chip RTL8720CF with built-in Wi-Fi stacks and various library functions. It combines a low-power KM4 microcontroller unit (MCU), WLAN MAC, and 1T1R (1 transmitter/1 receiver) design. It provides output frequency up to 100 MHz, 256 KB embedded SRAM, 2 MB flash memory, and configurable GPIOs that can function as digital peripherals for various applications. MDWBRCU1 is a real-time operating system (RTOS), integrated with all Wi-Fi MAC and TCP/IP libraries. You can develop your own embedded Wi-Fi products. 1.1 Features Built-in low-power KM4 MCU that provides output frequency up to 100 MHz and also acts as an application processor. Wi-Fi and Bluetooth connectivity IEEE 802.11 b/g/n20. Channels 1-14@2.4GHz (CH1-11 for US/CA, and CH1-13 for EU/CN). Support security protocols, including WEP, WPA, WPA2, and WPA2 PSK

(AES). Support Bluetooth LE 4.2. The maximum output power is +20 dBm for IEEE 802.11b transmission. Support Wi-Fi Easy Connect (EZ mode) pairing mode on Android and iOS devices. Onboard PCB antenna. It has passed CE and FCC certifications. Operating temperature: -20C to +85C. 1.2 Applications Smart building Smart home and electrical appliance Smart socket and light Industrial wireless control 1 / 12 1 Overview Baby monitor IP camera Smart bus It needs to be connected to a specific circuit to use, and it will not work when connected to a computer. 2 / 12 2 MDWBRCU1 interfaces 2 MDWBRCU1 interfaces 2.1 Dimensions and footprint MDWBRCU1 uses USB serial communication. The following figure shows the posi-

tions of serial ports:

Pin Symbol I/O type Feature 1 2 3 4 GND TX RX 5V P I/O I/O P Ground pin. TX pin for serial communication. RX pin for serial communication. 5V power input pin. Note: P indicates the power pin, and I/O indicates the input and output pin. The following figure shows the dimensions of the finished product shell:

3 / 12 2 MDWBRCU1 interfaces 4 / 12 3 Electrical parameters 3 Electrical parameters 3.1 Electrical parameters Description Min value Max value Unit Input voltage range Operating ambient temperature Operating ambient humidity Storage ambient temperature 4.5

-20 0%

-20 5.5 85 90%

85 V C RH C 3.2 Radio frequency (RF) power Power consumption during TX continuous transmission Symbol Mode Power Average value Peak (Typical) Unit IRF IRF IRF 802.11b, 11 Mbit/s +17 dBm 802.11g, 54 Mbit/s +15 dBm 802.11n, BW20 MCS7

+14 dBm 177 154 154 214 186 186 mA mA mA Power consumption during RX continuous reception Symbol Mode Average value Peak (Typical) Unit IRF IRF 802.11b, 11 Mbit/s 40.6 802.11g, 54 Mbit/s 40.6 59.6 58.8 mA mA 5 / 12 3 Electrical parameters Symbol Mode Average value Peak (Typical) Unit IRF 802.11n, HT20 MCS7 40.5 58.8 mA 3.3 Power consumption in working mode Working mode Status (Ta =

25C) Average value Peak (Typical) Unit 222 mA Pairing in EZ mode The module is 41.9 in EZ mode. The Wi-Fi network status indicator blinks quickly. Connected and idle mode connected to The module is 17.1 212 mA the cloud. The Wi-Fi network status indicator is steady on. 206 mA The module is 40.2 Connected and operating connected to mode the cloud. The Wi-Fi network status indicator is steady on. 6 / 12 3 Electrical parameters Working mode Status (Ta =

25C) Average value Peak (Typical) Unit 218 mA Disconnected mode The module is 54.7 disconnected from the cloud. The Wi-Fi network status indicator is steady off. 7 / 12 4 RF parameters 4 RF parameters 4.1 Basic RF features Parameter Description Frequency range Wi-Fi standard 2.400 to 2.4835 GHz IEEE 802.11b/g/n (channels 1 to 14) Bluetooth LE standard Bluetooth LE 4.2 Data transmission rate Antenna type IEEE 802.11b: 1, 2, 5.5, and 11 Mbit/s IEEE 802.11g: 6, 9, 12, 18, 24, 36, 48, and 54 Mbit/s IEEE 802.11n: HT20 MCS0-7 Onboard PCB antenna with a gain of 0.29 dBi. 4.2 Transmitter (TX) performance TX continuous transmission performance Parameter Min value Typical value Max value RF average output power, 802.11b CCK mode, 11M RF average output power, 802.11g OFDM mode, 54M RF average output power, 802.11n OFDM mode, MCS7 RF average output power, Bluetooth LE 4.2,1M

17 14 13 6.5

Unit dBm dBm dBm dBm Frequency error

-20

20 ppm 8 / 12 4 RF parameters Parameter Min value Typical value Max value Unit EVM@802.11b CCK 11 Mbit/s mode, 17.5 dBm EVM@802.11g OFDM 54 Mbit/s mode, 14.5 dBm EVM@802.11n OFDM MCS7 mode, 13.5 dBm

-15 dB

-33 dB

-33 dB Receiver (RX) performance Parameter Min value Typical value Max value PER < 8%, RX sensitivity, 802.11b CCK mode, 11M PER < 10%, RX sensitivity, 802.11g OFDM mode, 54M PER < 10%, RX sensitivity, 802.11g OFDM mode, MCS7 PER < 10%, RX sensitivity, Bluetooth LE 4.2, 1M

-97

-75

-72

-93

Unit dBm dBm dBm dBm 9 / 12 5 Appendix: Statement 5 Appendix: Statement FCC Caution: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 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 radiated 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. Caution: Changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. This equipment should be installed and operated with minimum distance 20cm from your body. 10 / 12 Declaration of Conformity European Notice 5 Appendix: Statement Hereby, Hangzhou Tuya Information Technology Co., Ltd declares that this module product is in compliance with essential requirements and other relevant provisions of Directive 2014/53/EU,2011/65/EU. A copy of the Declaration of Conformity can be found at https://www.tuya.com. This product must not be disposed of as normal household waste, in accordance with the EU directive for waste electrical and electronic equipment (WEEE-

2012/19/EU). Instead, it should be disposed of by returning it to the point of sale, or to a municipal recycling collection point. The device could be used with a separation distance of 20cm from the hu-

man body. 11 / 12 5 Appendix: Statement ISED Statement This Class [B] digital apparatus complies with Canadian CAN Cet appareil numrique de la classe [B] est conforme la norme NMB-

3(B)du Canada. ICES-3(B). This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation,Science and Economic Development Canadas licence-exempt RSS(s). Operation is subject to the following two conditions:

1. This device may not cause interference. 2. This device must accept any interference, including interference that may cause undesired operation of the device. Lmetteur/rcepteur exempt de licence contenu dans le prsent appareil est conforme aux CNR dInnovation, Sciences et Dveloppement conomique Canada applicables aux appareils radio exempts de licence. Lexploitation est autorise aux deux conditions suivantes :

1. Lappareil ne doit pas produire de brouillage;

2. Lappareil doit accepter tout brouillage radiolectrique subi, mme si le brouillage est susceptible den compromettre le fonctionnement. This equipment complies with ISED RSS-102 radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator and any part of your body. Pour se conformer aux exigences de conformit CNR 102 RF exposition, une distance de sparation d'au moins 20 cm doit tre maintenue entre l'antenne de cet appareil ettoutes les personnes. 12 / 12

Company: Hangzhou Tuya Information Technology Co.,Ltd Address: Room701,Building3,More Center,No.87 GuDun Road, Hangzhou,Zhejiang, China Tel: 86-571-86581786 Fax: 86-571-86581786 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 07-06-2023 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2ANDL-MDWBRCU1 Hangzhou Tuya Information Technology Co.,Ltd 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: Linyun Li Applicant printed name:

Rev 1/26/2023 Rev 1/26/2023

Company: Hangzhou Tuya Information Technology Co.,Ltd Address: Room701,Building3,More Center,No.87 GuDun Road, Hangzhou,Zhejiang, China Tel: 86-571-86581786 Fax: 86-571-86581786 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 07-06-2023 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2ANDL-MDWBRCU1 Hangzhou Tuya Information Technology Co.,Ltd 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: Linyun Li Applicant printed name:

Hangzhou Tuya Information Technology Co.,Ltd Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2ANDL-MDWBRCU1 Pursuant to Sections 0.457 and 0.459 of the Commissions Rules, we hereby request confidential treatment of information accompanying this application as outlined below:

Exhibit Type

(Block Diagram, Schematics, operation description) File Name

(Block Diagram, Schematics, operation description.pdf) 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. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Pursuant to DA04-1705 June 15, 2004 of the Commissions public notice, we also request temporary confidential treatment of information accompanying this application as outlined below:

Exhibit Type

(Internal Photos, Test Setup Photos) File Name

(Internal Photos, Test Setup Photos.pdf) Number of days: 180 days Sincerely,

(signature)

(printed name) Linyun Li Rev 11/20/07

Company: Hangzhou Tuya Information Technology Co.,Ltd Address: Room701,Building3,More Center,No.87 GuDun Road, Hangzhou,Zhejiang, China Tel: 86-571-86581786 Fax: 86-571-86581786 Date: 2023-06-20 To: Federal Communications Commission 7435 Oakland Mills Road Columbia MD FCC ID: 2ANDL-MDWBRCU1 To Whom It May Concern:

This letter is to ascertain that Hangzhou Tuya Information Technology Co.,Ltd Product name: Smart Kit, Model: MDWBRCU1 has been the units used for conducting FCC compliance testing, the SDoC part will be tested by FCC recognized test lab. If you have any question or concerns, please contact us. Sincerely, Company name: Hangzhou Tuya Information Technology Co.,Ltd Address: Room701,Building3,More Center,No.87 GuDun Road,Hangzhou,Zhejiang China E-mail: lily@tuya.com Tel: +86-571-86581786 Printed Name: Linyun Li Signature

Hangzhou Tuya Information Technology Co.,Ltd Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Date: 07/06/2023 SUBJECT: FCC Application for FCC ID: 2ANDL-MDWBRCU1 To Whom It May Concern:

We, the undersigned, hereby authorize Yu Anlu at TV SD Certification and Testing

(China) Co., Ltd. Shanghai Branch on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by TV SD Certification and Testing (China) Co., Ltd. Shanghai Branch on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti- Drug Abuse Act. We, the applicant, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Regards, Printed Name: Linyun Li Signature C:\Users\xu-jx\Desktop\back up\Project\2023\Hangzhou Tuya Information Technology Co., Ltd\709502303495-00 FCC and IC\FCC POA _Letter.docx

Hangzhou Tuya Information Technology Co., Ltd. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2023/6/26 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID: 2ANDL-MDWBRCU1 Hangzhou Tuya Information Technology Co., Ltd. certifies that, as of the date of the filing of the application,Tuya Global Inc. is our designated U.S. agent for service of process for the above referenced FCC ID: 2ANDL-MDWBRCU1.Hangzhou Tuya Information Technology Co., Ltd. accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Tuya Global Inc.accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent Information:

Name: Tuya Global Inc. FRN: 0033411059 Address: 3979 Freedom Circle, Suite 340, Santa Clara, CA 95054, USA Contact Person: Eric Shen Tel.: 626-215-3367 Email: eric.shen@tuya.com Sincerely, Hangzhou Tuya Information Technology Co., Ltd. Linyun Li Tuya Global Inc. Eric Shen Rev 1/26/2023

1Structural photos MDWBRCU1 USB Interface Description Letter 2Scenes to be used MDWBRCU1 is a Wi-Fi and Bluetooth Low Energy (LE) combo adapter board developed by Tuya Smart.It is designed to be used in traditional home appliances such as air conditioners and dehumidifiers, making Host intelligent. The computer is not among its uses. 3Interface Description The external communication interface on the hardware of the module is a TTL level serial port, and the usb port of the computer is USB protocol, so there is no communication on the hardware. At the same time, the process of starting the networking of the module must be initiated through the serial port command, so when the module connected to a computer, although it plugs in, it won't work. Hangzhou Tuya Information Technology Co., Ltd. Linyun Li

Company: Hangzhou Tuya Information Technology Co.,Ltd Address: Room701,Building3,More Center,No.87 GuDun Road, Hangzhou,Zhejiang, China Tel: 86-571-86581786 Fax: 86-571-86581786 WIFI Channel 12 ,13 and 14 Declaration Letter We declare the equipment identified below with regards to Channel 12,13 and 14 capabilities for FCC ID:2ANDL-MDWBRCU1 IC:23243-MDWBRCU1 Declaration Product hardware does not have the capability to operate on Channel 12,13 and 14. Product hardware has the capability to operate on Channel 12 ,13 and 14. However, these three channels will be disabled via software and will not be accessible to user. Product hardware has the capability to operate on Channel 12 ,13 and 14. However, all the operated channels cant be changed in the RF parameter via software. All channels have complied with all of the requirements sets out in FCC Part 15.247. Product hardware has the capability to operate on WiFi Channel 12 ,13 and 14, and meets the requirements of KDB 594280 D01 v02r01. Please note:

1.) By default, this device operates in a mode that is compliant with the U.S. requirements. 2.) This device will also use supplemental information such as geo-location data to determine that it is operating outside the U.S., if necessary, to change its power. Such supplemental data will be derived from the following:

Global Navigation Satellite System (GNSS)7 sensors in the device Mobile Country Code (MCC),8 or MCC with a Mobile Network code (MNC), received from a CMRS9 carrier and received directly by a receiver on the device Country information derived from multiple adjacent access points (for example using IEEE Std 802.11d provisions) may be permitted on case-by-case basis Other suitable geo-location data based on IP addresses or other reliable source. Name / Title: / Manager Signature:

Phone: +86-571-86581786 Email: lily@tuya.com Date: June 25,2023