5V 16-Channel Relay interface board and each one needs 15-25mA Driver Current, Equipped with high-current relay, AC 250V 10A; DC 30V 10A., Standard interface that can be controlled directly by microcontroller (for Arduino , 8051, AVR, PIC, PLC,DSP, ARM, ARM, MSP430, TTL logic)., Indication LED's for Relay output status.