ESP8266 ESP-12F Dual-Channel 30A WiFi Relay Board, 5V 7-28V

This dual-channel WiFi relay module integrates an ESP-12F microcontroller board with two heavy-duty 30A switching relays. Powered via a 5V or wide DC 7–28V input, it breaks out essential I/O and UART connections for straightforward firmware flashing. It is an excellent wireless control solution for makers, students, and hobbyists developing smart home and automation projects.

High-current switching capability

The board is equipped with two 5V 30A relays capable of switching loads up to AC 250V or DC 30V. Onboard status indicators show power and relay engagement clearly during operation.

ESP-12F module and controls

Driven by an ESP-12F WiFi module with 4MB of flash memory, the board supports development environments such as Eclipse and standard IDEs. Onboard controls include a dedicated RST reset button, a programmable user button, and a programmable status LED.

Power and expansion interfaces

The module offers flexible power options with support for either a 5V or DC 7–28V input supply. All I/O lines and UART programming ports are routed out to facilitate secondary custom development.