This is a 5V 4-Channel Relay interface board, controlled directly by a Microcontroller(Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic) .

• 5V 4-Channel Relay interface board
• Equipped with high-current relay, AC250V 10A ; DC30V 10A
• Working voltage 5 V
• Weight : ~60 g

Module interface specifications (6 wire):

• VCC external 5 V
• GND external GND
• 4 input wires to control relay.

Standard interface that can be controlled directly by microcontroller (AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic). Indication LED's for Relay output status