The item is a 12v 8-channel relay interface board,It can be controlled directly by a wide range of microcontrollers such as Arduino, AVR, PIC, ARM and so on. 8-Channel Relay interface board, each one needs 15-20mA Driver Current.
Equiped with high-current relay : DC30V 10A AC250V 10A. Standard interface that can be controlled directly by microcontroller, indication LED's for Relay output status.
Required drive current: 15-20mA each channel
Control signal: TTL level 12Vdc
Maximum switching voltage: 250VAC, 30VDC
Equipped with high-current relay SPDT: 10A 30Vdc - 250Vac 10A