WBR3 Reset & Teardown (FCC ID 2ANDL-WBR3)

Before you buy the Tuya Global WBR3, check what's inside.

The WBR3 is a low-power embedded module featuring Wi-Fi and Bluetooth connectivity, powered by the RTL8720CF chipset. It's designed for smart home applications and acts as the core for Tuya/Smart Life devices.

⚠️ NOTE: Ensure correct battery polarity when installing.

Quick Specs

Manufacturer: Tuya Global
Model: WBR3
Protocol: WiFi
Chipset: Realtek RTL8720
Ecosystem: Tuya / Smart Life
App: Smart Life

🔧 Geek Corner (Flashing Info)

Chipset: RTL8720CF
Flashable: ❌ No
Info: Module uses Realtek RTL8720CF chipset, which is not typically supported by open-source firmware like Tasmota or ESPHome without significant custom development or hardware modifications.

User Manual

Scanned pages from the official user manual:

WBR3 Manual

External Photos

Photos of the device exterior:

WBR3 Exterior

Internal Photos

Teardown photos showing the PCB and components:

WBR3 PCB

Verdict

The WBR3 is a WiFi device from the Tuya / Smart Life ecosystem.

📄 Click to view full text manual (SEO)

WBR3 Datasheet
1
1. Product Overview
WBR3 is a low-power embedded Wi-Fi and Bluetooth module that Tuya has developed. It
consists of a highly integrated RF chip (RTL8720CF) with an embedded Wi-Fi network
protocol stack and robust library functions. WBR3 also contains a low-power KM4
multipoint control unit (MCU), WLAN MAC, 1T1R WLAN, 256 KB static random-access
memory (SRAM), and 2 MB flash memory, and has extensive peripherals.
WBR3 is an RTOS platform that integrates all function libraries of the Wi-Fi MAC and
TCP/IP protocols. You can develop embedded Wi-Fi products as required.
Figure 1-1 shows the WBR3 architecture.
Figure 1-1 WBR3 architecture
Tuya WBR3 Wi-Fi and Bluetooth
Version: 2.0.0 Date: 2019-10-21 No.: 0000000001
Product
Manual
Global Intelligent Platform
WBR3 Datasheet
2
1.1 Features
 Embedded low-power KM4 MCU, which can also function as an application processor
 Clock rate: 100 MHz
 Working voltage: 3.0 V to 3.6 V
 Peripherals: nine GPIOs, one universal asynchronous receiver/transmitter (UART),
and one Log_TX pin
 Wi-Fi connectivity
 802.11b/g/n20
 Channels 1 to 14 at 2.4 GHz
 Compatible with Bluetooth low energy (BLE) 4.2(Up to +9dBm EIPR output
power)
 WPA and WPA2 security modes
 Up to +20 dBm EIRP output power in 802.11b mode
 Smart network configuration for Android and iOS devices
 Onboard PCB antenna
 Certified by CE, FCC, and SRRC
 Working temperature: –20°C to +85°C
1.2 Applications
 Intelligent building
 Smart household and home appliances
 Smart socket and light
 Industrial wireless control
 Baby monitor
 Network camera
 Intelligent bus
WBR3 Datasheet
3
Change History
No. Date Change Description Version After
Change
1 2019-10-21 This is the first release. 2.0.0
WBR3 Datasheet
4
Contents
1. Product Overview........................................................................................................................ 1
1.1 Features.............................................................................................................................. 2
1.2 Applications........................................................................................................................ 2
2 Module Interfaces......................................................................................................................... 6
2.1 Dimensions and Footprint................................................................................................ 6
2.2 Interface Pin Definition..................................................................................................... 6
3 Electrical Parameters................................................................................................................... 8
3.1 Absolute Electrical Parameters....................................................................................... 8
3.2 Electrical Conditions......................................................................................................... 8
3.3 RF Current Consumption.............