This is 5V 4-Channel Relay interface board, be able to control various appliances and other equipment with large current. It can be controlled directly by Microcontroller (for Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic). This is 0~2.5V triggered Low Level Trigger 4 Channel Relay Module.

Features:

5V 4 Channel Relay interface board and each one needs 15-20mA Driver Current.
Equipped with high-current relay, AC250V 10A; DC30V 10A.
Standard interface that can be controlled directly by microcontroller (for Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic).
Indication LED’s for Relay output status.