The relay board appears to work well. The only issue is a lack of documentation. After significant search time I have found some things. The board came pre-loaded with a WiFi scan program. After hooking it up to a serial monitor it reported a list of the visible WiFi networks. I was able to program it using the Arduino IDE as a Generic ESP8266 module. Use P6 right next to the power terminals. The pins are labeled TX. RX. & GND. This is a serial port to upload the software. P5 right next to it is the Boot terminal. If these pins are connected together when the board is powered up,it goes into boot mode, ready to receive a software load. I had to update to version 2.6.3 of the ESP8266 package to get reliable programming. The builtin LED is on GPIO 2. The relay control is on GPIO 4. The Optocoupler input is on GPIO 5. The pins for the input are +5v from the on-board buck converter, Optocoupler IN, and Optocoupler ground. The Optocoupler ground is NOT connected to the board ground.

The relay board appears to work well. The only issue is a lack of documentation. After significant search time I have found some things. The board came pre-loaded with a WiFi scan program. After hooking it up to a serial monitor it reported a list of the visible WiFi networks. I was able to program it using the Arduino IDE as a Generic ESP8266 module. Use P6 right next to the power terminals. The pins are labeled TX. RX. & GND. This is a serial port to upload the software. P5 right next to it is the Boot terminal. If these pins are connected together when the board is powered up,it goes into boot mode, ready to receive a software load. I had to update to version 2.6.3 of the ESP8266 package to get reliable programming. The builtin LED is on GPIO 2. The relay control is on GPIO 4. The Optocoupler input is on GPIO 5. The pins for the input are +5v from the on-board buck converter, Optocoupler IN, and Optocoupler ground. The Optocoupler ground is NOT connected to the board ground.

The relay board appears to work well. The only issue is a lack of documentation. After significant search time I have found some things. The board came pre-loaded with a WiFi scan program. After hooking it up to a serial monitor it reported a list of the visible WiFi networks. I was able to program it using the Arduino IDE as a Generic ESP8266 module. Use P6 right next to the power terminals. The pins are labeled TX. RX. & GND. This is a serial port to upload the software. P5 right next to it is the Boot terminal. If these pins are connected together when the board is powered up,it goes into boot mode, ready to receive a software load. I had to update to version 2.6.3 of the ESP8266 package to get reliable programming. The builtin LED is on GPIO 2. The relay control is on GPIO 4. The Optocoupler input is on GPIO 5. The pins for the input are +5v from the on-board buck converter, Optocoupler IN, and Optocoupler ground. The Optocoupler ground is NOT connected to the board ground.

Work well - can be flashed with Tasmota, fast delivery!

Work well - can be flashed with Tasmota, fast delivery!

Work well - can be flashed with Tasmota, fast delivery!

all ok

all ok

all ok

Superpack! Thank You!

Superpack! Thank You!

Superpack! Thank You!