Be able to control various appliances, and other equipments with large current It can be controlled directly by Micro-controller ( , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic) 5V 4-Channel Relay interface board, and each one needs 50-60mA Driver Current Equiped with high-current relay, AC250V 10A , DC30V 10A Indication LED's for Relay output status
Use:
Supports all MCU control The industrial field PLC control Smart home control
Well pleased with these boards. All operated ok. Each relay is 75 ohms and draws 66 milliamperes. Use a separate 5 volt regulator to power them when operating with an arduino. Pulling down the input pin to common turns on the relay. I made a Bluetooth controlled arduino board that controls the relays as shown in my photo. The board has red leds to indicate which relay is turned on. You can replace the pin strip with a Molex connector, but its a tight fit with the pins.