4 CHANNEL 12V RELAY MODULE

The 4-Channel 12V Relay Module is a four-channel electromagnetic relay module designed to control up to four high-voltage or high-current AC/DC loads using low-voltage control signals from a microcontroller. It operates with 12 V relay coils and can switch AC loads up to 250 V and DC loads up to 30 V, depending on the relay specifications. The module typically includes optocoupler isolation, transistor driver circuitry, flyback diode protection, and status LED indicators for each relay, ensuring safe, reliable, and stable operation. It can be easily interfaced with Arduino, ESP32, STM32, Raspberry Pi, and PIC microcontrollers through digital I/O pins. Due to its robust design, electrical isolation, and ease of integration, the 4-Channel 12V Relay Module is widely used in home automation, industrial automation, IoT systems, robotics, lighting control, motor control, security systems, smart appliances, and remote switching applications.