4 Channel Relay Module Board 5V for Arduino ESP32 Raspberry Pi

4 Channel Relay Module Board – 5V

Control high-voltage appliances and heavy loads from your microcontroller with this reliable 4 Channel Relay Module. Designed for seamless integration with Arduino, ESP32, ESP8266, Raspberry Pi, and other 5V microcontrollers, this module lets you switch AC/DC loads with simple digital signals — perfect for home automation, industrial control, and DIY electronics projects.

Why You'll Love It

• 4 independent relay channels — control 4 devices simultaneously
• Optocoupler isolation — protects your microcontroller from high-voltage spikes
• Active LOW trigger — compatible with most microcontroller GPIO outputs
• LED indicators on each channel — easily see relay status at a glance
• Screw terminal connectors — secure and reliable wire connections

Specifications

• Number of Channels: 4
• Operating Voltage: 5V DC
• Trigger Signal: Active LOW (3.3V & 5V compatible)
• Max Load (AC): 250V AC / 10A
• Max Load (DC): 30V DC / 10A
• Relay Type: SPDT (Single Pole Double Throw)
• Optocoupler: Yes (isolated)
• Dimensions: ~75mm x 55mm

Perfect For

• Home automation (lights, fans, appliances)
• Arduino & ESP32 IoT projects
• Industrial switching applications
• Robotics and motor control
• Smart irrigation systems

Includes header pins for easy breadboard or jumper wire connections. Wiring guide available on request.