This is a 12V 16-Channel Relay interface board. It is able to control various appliances, and other equipments with large current. It can be controlled directly by Micro-controller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic).Features:12V 16-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 (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic);Indication LED's for Relay output status.