5V 4 Channel Relay Module

The 5V 4 Channel Relay Module is an electromechanical switching module designed to control multiple electrical devices from a microcontroller. Each relay channel can independently switch devices such as lights, motors, pumps, fans, or other appliances.

The module includes relay driver circuitry, protection components, and LED indicators for each channel. When a control signal is sent from a microcontroller, the relay activates and changes the connection between the COM, NO, and NC terminals, allowing the connected device to turn ON or OFF.

Because relays provide electrical isolation between the control circuit and high-voltage loads, the microcontroller remains protected while controlling powerful electrical equipment.

Key Features

• Four relay channels for controlling multiple devices

• 5V operating voltage compatible with most microcontrollers

• Independent control for each relay channel

• Supports AC and DC load switching

• Onboard LED indicators for each relay status

• Easy interface with Arduino and other development boards

Technical Specifications

Pin Configuration

Control Pins

Relay Output Pins (Per Channel)