Description

This 4-Channel 12V Relay Module is designed for controlling 4 separate high-voltage devices using a low-voltage microcontroller such as Arduino, ESP32, or Raspberry Pi. Each relay channel is opto-isolated, which protects your microcontroller from high-voltage spikes. The module supports both active HIGH and LOW triggering and includes onboard LEDs to indicate relay status. Ideal for home automation, IoT, and robotics projects, it provides safe and reliable control of AC or DC loads.

Key Features

• 4-channel relay module, each channel rated for 10A at 250V AC / 10A at 30V DC

• Opto-isolated input for microcontroller protection

• Onboard LED indicators for relay status

• Supports both active HIGH and LOW triggering

• Operating voltage: 12V DC

• Suitable for Arduino, ESP32, Raspberry Pi, and other microcontrollers

Variants

• 4-Channel Standard Relay Module

• 4-Channel with screw terminals for easy connection

Specifications

Applications

• Home automation (lights, fans, appliances)

• IoT projects requiring multiple relay controls

• Robotics and industrial automation

• Arduino, ESP32, Raspberry Pi-based control projects

• High-voltage load switching with low-voltage controllers

Compatible Boards / Circuits

• Arduino Uno, Mega, Nano

• ESP32 / ESP8266

• Raspberry Pi (via GPIO and relay driver)

• Any microcontroller with digital output