MDWBRCU1 Reset & Teardown (FCC ID 2ANDL-MDWBRCU1)

Before you buy the Tuya Global MDWBRCU1, check what's inside.

The MDWBRCU1 is a versatile WiFi and Bluetooth LE combo adapter board from Tuya, utilizing the RTL8720CF chipset. It's designed for integration into smart home and appliance products, requiring a 5V power input.

⚠️ NOTE: Ensure correct 5V power input and proper connection to the intended circuit; this board is not a standalone device.

Quick Specs

Manufacturer: Tuya Global
Model: MDWBRCU1
Protocol: WiFi
Chipset: Realtek RTL8720
Ecosystem: Tuya / Smart Life
App: Smart Life

🔧 Geek Corner (Flashing Info)

Chipset: RTL8720CF
Flashable: ❌ No
Info: Datasheet explicitly states 'Not Flashable' and uses a proprietary Tuya chipset which is generally not supported for flashing custom firmware.

User Manual

Scanned pages from the official user manual:

MDWBRCU1 Manual

External Photos

Photos of the device exterior:

MDWBRCU1 Exterior

Internal Photos

Teardown photos showing the PCB and components:

MDWBRCU1 PCB

Verdict

The MDWBRCU1 is a WiFi device from the Tuya / Smart Life ecosystem.

📄 Click to view full text manual (SEO)

MDWBRCU1 Adapter Board Datasheet 

Version: 20230621 

Online Version 

Contents 
I 

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 
1 Overview 
1 / 12 

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 [email protected] (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: -20° C to +85° C. 

1.2 Applications 

• Smart building 
• Smart home and electrical appliance 
• Smart socket and light 
• Industrial wireless control 
1 Overview 
2 / 12 

• 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.
3 / 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 GND P Ground pin. 
2 TX I/O TX pin for serial 
communication. 
3 RX I/O RX pin for serial 
communication. 
4 5V P 5V power input 
pin. 

Not...