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.

If you are a devotee of audiophile-quality analogue hi-fi, switching between sources simply can not be done through a solid-state device. Only physical switches will do because they come without th… ...

Farm Data Relay System: ... We use ESP8285 and ESP32 MCUs with SX1280 or SX1272 transceivers with amplifiers from 100mW to 1W. Report comment. Reply. Martin W says: July 3, 2022 at 4:24 pm ...