* Y444 Input/output side with surge absorbing circuit, which can effectively extend the life of the relay contact, and can slow the instantaneous impact current of load side.
* NPN/PNP bipolar input corresponding, and the indicator light will also follow the input signal of different and bright color ;Green - NPN ; Red - the PNP.* Input side wrong line protection.
The relay module control signal can be set as an NPN and PNP, specific methods please consult sales .
* Note:Before ordering , please confirm the load type and size, choose the suitable way to control.
* Contact protection scheme ,please refer to this chapter products;
* When PLC connection,please be sure to use the company developed and the corresponding special cable.