1. The 8-channel 30A relay development board is a development board based on the -WROOM-32E module 3. Onboard programmable buttons, LEDs and relays facilitate developers to quickly conduct prototype verification and development, and bring more possibilities for loT control scenarios 4. Provide SDK ESP-IDF code. After burning the program, you can directly remotely control the onboard LED and relay with your mobile phone, and have functions such as WiFi network configuration and factory reset (contact customer service) 2. I/O ports are fully led out, supporting DC7-28V/5V power supply 5. supports the use of development tools such as for ArduinolDE/VSCode/Tonny: for code and ESP-IDF code are provided(contact customer service), Weight: 0.67461452172 pounds, Manufacturer: Aisuoka