SMAKN&reg;DC 5V 16-Channel Relay Module Dashboard Optocoupler Protection with Lm2596 Power 5V 16-Channel Relay interface board, and each one needs 15-20mA Driver Current Equipped with high-current relay, AC250V 10A ; DC30V 12A Standard interface that can be controlled directly by microcontroller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP433, TTL logic) Indication LED's for Relay output status