1、This is a 12V relay with optocoupler protection. I/O port drive low level effective 2、It can be used as a SCM development board module, as home appliances controller and can also be used as PLC extension output 3、Adopting high quality isolation optocoupler, with strong anti-interference ability and stable performance. The trigger current is only 3mA 4、The 1-16 channel can be freely open/close completely or separately 5、Each channel COM is independent, convenient for users to access different signals. Each channel has N.C. and N.O. terminals Features: This is a 12V relay with optocoupler protection. I/O port drive low level effective. It can be used as a SCM development board module, as home appliances controller and can also be used as PLC extension output. Adopting high quality isolation optocoupler, with strong anti-interference ability and stable performance. The trigger current is only 3mA. The 1-16 channel can be freely open/close completely or separately. Each channel COM is independent, convenient for users to access different signals. Each channel has N.C. and N.O. terminals. Each channel has indicator light that lights on when energized and lights off when dis-energized. Specifications: Power Supply Current: >200mA Power Supply Voltage: 12V DC Power: <2000W Size: 180*80*20mm/7.08*3.14*0.78" Load Capacity: 10A 250V Control Signal Voltage Range: trigger signal is low level 0-2v; high level voltage must not exceed 5V Package Includes: 1 x Relay Module