Athom 2CH Relay Board (R2-ESP)
Maker: https://www.athom.tech/ Product page: https://www.athom.tech/blank-1/2ch-inching-self-lock-relay-for-esphome
Also on Aliexpress, available pre-flashed with ESPHome or Tasmota.
Description
A 2-relay board with an ESP32-WROOM-32E.
Built-in RF433 receiving module
Onboard buttons to control each relay
Built-in CH340 serial port chip, can realize arbitrary programming
Each relay has COM/NO/NC terminals and is rated for a 10A max load.
The board can be powered either via 7-30 VDC or 5 VDC (separate terminals and Type-C).
GPIO Pinout
| Pin | Function |
|---|---|
| GPIO36 | Button1 |
| GPIO39 | Button2 |
| GPIO27 | Relay1 |
| GPIO14 | Relay2 |
| GPIO15 | Led |
| GPIO16 | RF33 |
Basic Configuration
The Latest configuration can be found on Athom's GitHub repo.