To simplify this, [Timm Bogner] created Farm Data Relay System which simplifies the ... The FDRS uses a combination of ESP32/8266 sensor nodes for short range, and LoRa nodes for long range.

The 4 channel smart relay board is powered by a ESP32 WROOM providing the ability to safely control up to four appliances or devices on a load of 110-250 VAC/7A, 30 VDC/10A depending on your needs.