WR2 Reset & Teardown (FCC ID 2ANDL-WR2)

Before you buy the Tuya Global WR2, check what's inside.

The WR2 is a compact, low-power Wi-Fi module designed by Tuya, featuring an integrated ARM CM4F processor and supporting 802.11 b/g/n connectivity. It is intended for integration into smart home devices and other IoT applications requiring wireless communication.

⚠️ NOTE: Ensure correct polarity and voltage (3.3V DC) when supplying power to the module.

Quick Specs

Manufacturer: Tuya Global
Model: WR2
Protocol: WiFi
Chipset: Realtek RTL8710
Ecosystem: Tuya / Smart Life
App: Smart Life

🔧 Geek Corner (Flashing Info)

Chipset: W302 12E77H2 (Tuya)
Flashable: ❌ No
Info: The device is a module designed for integration, and its firmware is not intended for end-user flashing with custom firmware like Tasmota or ESPHome. It relies on Tuya's ecosystem.

User Manual

Scanned pages from the official user manual:

WR2 Manual

External Photos

Photos of the device exterior:

WR2 Exterior

Internal Photos

Teardown photos showing the PCB and components:

WR2 PCB

Verdict

The WR2 is a WiFi device from the Tuya / Smart Life ecosystem.

📄 Click to view full text manual (SEO)

WR2DATASHEET
TuyaSmart Wi-Fi Module 
1. Product Overview
WR2 is a low power consumption module with built-in Wi-Fi connectivity solution 
designed by Hangzhou Tuya Information Technolo gy Co., Ltd. The Wi-Fi Module consists of 
a highly integrated wireless radio chip
 W302 12E77H2 and some extra flash that has been 
programmed with Wi-Fi network protocol and plenty of software examples.WR2 include a 
ARM CM4F, WLAN MAC, 1T1R WLAN, maximum 
frequency reaches 125MHz, 256K 
SRAM, 1M byte flash and various peripheral resources. 
WR2 is a RTOS platform, embedded with all the Wi-Fi MAC and TCP/IP protocol function 
examples, users can customize their Wi-Fi product by using these software examples. 
1.1 Features 
 Integrated low power consumption 32-bit CPU, also known as application processor
 Basic frequency of the CPU can support 125 MHz
Supply voltage range: 3.3V DC
 Peripherals: 5 GPIO channels, 1 UART, 1 ADC
 Wi-Fi connectivity:
 802.11 B/G/N20/N40
Channel 1 to 11@ 2.4GHz
 Support WPA/WPA2
+20.11dBm output power in 802.11b mode
 Support SmartConfig function for both Android and IOS devices

WR2DATASHEET
 On-board PCB antenna
 Operating temperature range: -20℃ to 85℃
1.2 Main Application Fields 
 Intelligent Building
 Intelligent home, Intelligent household applications
 Healthy devices
 Industrial wireless control
 Baby monitor
 Webcam
 Intelligent bus
WR2DATASHEET
2. Dimensions and Footprint
2.1Dimensions 
WR2 has 2 columns of Pins. The distance between each Pin is 2 mm. 
Size of WR2: 15mm(W)*18mm(L)*3.3mm(H) 
Figure 2 shows the dimensions of WR2. 
Figure 2. The dimensions of WR2 
2.2 Pin Definition 
Table 1 shows the general pin attributes of WR2 
Table 2.1 The typical pin definition of WR2 
PIN
NO.
NAME TYPE DISCREPTION
1 VD33 P Supplyvoltage(3.3V)
2 GPIOA_12 I/O GPIOA_12 
3 GND P Ground
4 GPIOA_0 I/O GPIOA_0,cannotbepull‐upwhilebooting,canbeusedasGPIO
whileinnormalworkingmode
5 GPIOA_18 I/O UART0_RXD 
6 GPIOA_5 I/O GPIOA_5 
7 GPIOA_23 I/O UART0_TXD 
8 ADC AI ADCterminal(input5Vmaximally)
9 GPIOA_14 I/O GPIOA_14 
10 CHIP_EN I/O Externalresetsignal(lowleveleffects)

WR2DATASHEET
11 GPIOA_15 I/O GPIOA_15 
Note: S
: Power supply pins; I/O: Digital input or output pins; AI: Analog input. 
WR2DATASHEET
3. Electrical Characteristics
3.1 Absolute Maximum Ratings 
Table 3.1 Absolute Maximum Ratings 
PARAMETERS DESCRIPTION MIN MAX UNIT
Ts Storagetemperature‐ 40 105 ℃
VDD Supplyvoltage ‐0.3 3.6 V
Staticelectricityvoltage
(humanmodel)
TAMB‐25℃ ‐ 2 KV
Staticelectricityvoltage
(machinemodel)
TAMB‐25℃ ‐ 0.5 KV
3.2 Electrical Conditions 
Table 3.2. Electrical Conditions 
PARAMETERS DESCRIPTION MIN TYPICAL MAX UNIT
Ta Workingtemperature ‐20 ‐ 85 ℃
VCC Workingvoltage 3 ‐ 3.6 V
VIL IOlowlevelinput ‐0.3‐ VCC*0.25 V
VIH IOhighlevelinput VCC*0.75 ‐ VCC V
VOL IOlowleveloutput ‐ ‐ VCC*0.1 V
VoH IOhighleveloutput VCC*0.8‐ VCC V
Imax IOdrivecurrent ‐ ‐ 16 mA
Cpad Inputcapacitor ‐ 2 ‐ pF
3.3 Wi-Fi Transmitting Current Consumptions 
Table 3.3. Wi-Fi TX current consumptio...