ESP8266 ESP-12F 4-Channel Relay Module DC7-28V/5V 30A

Description

This development board merges the popular ESP8266 Wi-Fi SoC with robust relay control, creating a ready-made node for smart home automation and industrial IoT. The onboard ESP-12F module provides full 802.11 b/g/n connectivity and is pre-configured with accessible I/O pins, enabling direct firmware flashing via the exposed serial UART using the Arduino IDE or ESP8266 SDK.

The module’s power design is flexible, accepting a broad 7-28V DC input range commonly found in automotive and security systems, or a standard 5V USB supply for prototyping. Each of the four relays is rated for 30A, allowing direct control of high-power devices like motors, solenoids, and lighting without requiring an external driver circuit. The board includes necessary indicators and user inputs for system status and manual override functionality.