4 Channel 5V Relay Module for Arduino

4 Channel 5V Relay Module

Control high-voltage, high-current loads such as lights, motors, and home appliances with this 4 Channel 5V Relay Module. A relay is an electrically operated switch, and this module allows a low-voltage signal from a microcontroller like an Arduino or ESP32 to safely manage powerful AC or DC devices.

This module works by using an optocoupler to electrically isolate your sensitive microcontroller from the high-power circuit. When a low-voltage signal is sent to one of the input pins (IN1-IN4), it activates the corresponding relay, closing the switch and allowing current to flow to your connected device. Onboard LEDs for each channel provide a clear visual indication of which relays are currently active.

With convenient screw terminals for the load connections and standard header pins for the control signals, this module is designed for easy integration into your projects. It’s an essential component for any electronics enthusiast looking to bridge the gap between microcontrollers and the real world of high-power electronics.

Safety Note: Exercise extreme caution when working with high voltages (like mains AC). Ensure all power is disconnected before making connections. If you are unsure, consult a qualified professional.

Key Features:

• Control Voltage: 5V DC, compatible with standard microcontrollers
• Number of Channels: 4 independent relay channels
• Load Rating: Up to 10A at 250V AC or 15A at 125V AC
• Safety Isolation: Equipped with optocouplers to protect the control circuit
• Status Indicators: Individual red LED for each relay’s on/off state
• Easy Connectivity: Screw terminals for output; 6-pin header for VCC, GND, and IN1-IN4 inputs

Applications:

This 4-channel relay is perfect for a wide range of applications, including building custom home automation systems to control lighting and fans, creating Internet of Things (IoT) devices for remote switching, robotics projects for activating motors and actuators, and controlling pumps or solenoid valves for automated gardening or aquariums.