ESP32 dual-channel 30A relay development board is a development board based on Espressif's ESP32-WROOM-32E module. The I/O port is fully led out and supports DC7-28V/5V power supply.<br> Onboard programmable buttons, LEDs and relays facilitate developers to quickly conduct prototype verification and development, and bring more possibilities for loT control scenarios.<br> After burning the program, it can be directly controlled by mobile phone remotely. The onboard LEDs and relays have functions such as WiFi network configuration and factory reset.<br> Onboard 2-way 5V/30A relays, output switch signals, suitable for controlling loads with working voltage within AC 250V/DC30V.<br> ESP32 supports the use of development tools such as for ArduinolDE/VSCode/Tonny.<br> Instructions for use:<br> The relay control pins are GPIO12 and GPIO13, and high level is valid.<br> The programmable LED is GPIO5, and low level is valid. Users can write their own program control.<br> The programmable button is GPIO0. It is also the burning button.<br> Relay output terminal:<br> NC: Normally closed terminal, short-circuited with COM before the relay is energized, and left floating after energization;<br> COM: Common terminal;<br> NO: Normally open terminal, left floating before the relay is energized, and left short-circuited with COM after energization;<br> Colour:blue<br> Material:PCB+Components<br> Due to different batches, there may be differences in product appearance and printed text, which will not affect use<br> Package Contents:<br> 1 * ESP32 2-channel 30A relay module<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.