4 Channel 5V Relay Module Board for Arduino and Microcontrollers

The 4 Channel 5V Relay Module is an essential electronic interface board designed to switch high-voltage appliances and equipment with low-voltage digital signals. Ideal for automation projects, it is compatible with a wide range of microcontrollers such as Arduino, AVR, PIC, ARM, and others. With reliable performance, opto-isolated inputs, and clear LED indicators for each relay, this module is perfect for DIY electronics enthusiasts, engineers, and automation professionals.

Product Features

Microcontroller Compatibility

Designed with a standard interface, this 5V relay module can be directly controlled by various microcontrollers including Arduino, 8051, AVR, PIC, DSP, ARM, and MSP430 using TTL logic (active low).

High-Current Relays

Each relay is rated to handle AC 250V at 10A or DC 30V at 10A, making the module suitable for switching household appliances, industrial equipment, and other high-power loads.

Opto-Isolated Inputs

The relay board features opto-isolators on the input side to protect the control circuitry from high-voltage surges, ensuring stable and safe operation even in demanding environments.

LED Status Indicators

Each channel is equipped with an LED indicator to show the relay’s current output state, making debugging and status monitoring simple and intuitive.

Low Power Consumption

Each relay requires just 15–20mA of current to operate, making the module energy-efficient and suitable for low-power applications.

Product Specifications

• Number of Channels: 4
• Operating Voltage: 5V DC
• Relay Type: Electromechanical, High-current
• Relay Ratings: AC 250V / 10A, DC 30V / 10A
• Control Logic: TTL Active Low
• Driver Current (per relay): 15–20mA
• Input Type: Opto-isolated digital inputs
• Compatibility: Arduino, 8051, AVR, PIC, DSP, ARM, MSP430
• Indicators: LED status lights for each relay
• Board Type: Standard relay interface board
• Weight: Approx. 0.2 pounds