4 Channel Relay Module 30A DC7-28/5V WIFI Bluetooth Relay Module ESP32-WROOM Development Board 1 * Relay Module Kit Blue

4 Channel Relay Module 30A DC7-28/5V WIFI Bluetooth Relay Module ESP32-WROOM Development Board 1 * Relay Module Kit Blue

1. The 4-channel 30A relay development board is a development board based on the ESP32-WROOM-32E module 2. I/O ports are fully led out supporting DC7-28V/5V power supply 3. Onboard programmable buttons LEDs and relays facilitate developers to...


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