5V, 10A 2-Channel Relay Interface Board

A high-power relay board for controlling large-current appliances using microcontroller signals

This 2-channel relay interface board is designed for controlling various appliances and other equipment with large current. The board can be directly controlled with 3.3V or 5V logic signals from a microcontroller, making it compatible with devices such as Arduino, 8051, AVR, PIC, DSP, ARM, MSP430, and TTL logic.

• Voltage capacity: 5V
• Current capacity: 10A
• Channels: 2
• Control methods: 3.3V or 5V logic signals
• Pin header: 1×4 (2.54mm pitch) for power and control

• Features:
• Can control appliances with large current
• Direct control with microcontroller signals
• Two indication LEDs for relay status
• Opto isolation circuitry for safety

The interface board features a 1×4 (2.54mm pitch) pin header for connecting power (5V and 0V) and for controlling the two relays. The fridge included GND, IN1, IN2, and VCC pins. IN1 and IN2 are for controlling relays 1 and 2 respectively, and relay activation is marked by below 2.0V input. VCC pin is for power input, specifically to power the opto couplers.