The 12 v 30 A type A(normally open) optical coupling isolate

        1.onboard EL817 photoelectric coupler with photoelectric isolating anti-interference ability strong

2.onboard 12 v,30 a / 250 vac,30 a / 30 VDC relays,the relay long life can absorb 100000 times in a row

3.module can be directly and MCU I/O link,with the output signal indicator

4.module with diode current protection,short response time

5.module is normally open (NO) output,impermanence closed (NC) output

6.PCB size: 34(mm)x39(mm)