2 Channel 5V Relay Board Module

Overview

2 Channel 5V Relay Board Module is a compact switching module designed for student, hobby, and electronic automation projects. It allows microcontrollers like Arduino, ESP32, and Raspberry Pi to independently control up to two high-voltage or high-current AC/DC devices such as lights, fans, motors, and appliances safely.

Features

• Controls up to 2 independent electrical loads simultaneously
• Supports 5V DC operating power input
• Capable of switching AC loads up to 250V/10A and DC loads up to 30V/10A
• Built-in optocoupler isolation to protect microcontrollers from electrical noise and voltage spikes
• Standard control interface with individual input pins (IN1, IN2)
• Independent LED status indicators for each channel
• NO (Normally Open), NC (Normally Closed), and COM (Common) screw terminals for each relay
• Compatible with Arduino, ESP32, Raspberry Pi, PIC, and AVR microcontrollers
• Ideal for dual-device home automation, robotics, and industrial switching

Applications

• Multi-load home automation systems for controlling separate lights, fans, or appliances
• Dual-pump or dual-valve smart agriculture and irrigation automation
• Microcontroller-based student, diploma, and university engineering projects
• Security systems, emergency alarms, and motorized device switching
• Industrial control panels and dual-channel remote switching
• Robotics and IoT projects requiring independent high-power switching

Important Notes:

• Always connect the relay module's GND to the microcontroller's GND for a common signal reference.
• Exercise extreme caution when handling high-voltage AC mains wiring (110V–220V) to prevent electric shock.
• Do not exceed the maximum rated load limits (10A per channel) of the relay contacts.
• Ensure your 5V power source can deliver adequate current (~160mA) when both relays are activated simultaneously.
• Test whether your specific board triggers on LOW or HIGH signal logic before programming.
• Properly insulate all exposed AC high-voltage terminals using heat-shrink tubing or a protective enclosure.

Package includes

• 1 x 2 Channel 5V Relay Board Module