The 12V 16 Channel Relay interface board, and each one needs 15-20mA Driver Current. The 12V 16 Channel Relay is equipped with high-current relay, AC250V 10A; DC30V 12A. Indication LED's for Relay output status. Standard interface that can be controlled directly by microcontroller (Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP433, TTL logic). With indication LEDs for Relay output status. The working status indicator lights are conducive to the safe use. The 12V 16 Channel Relay interface board, and each one needs 15-20mA Driver Current.