*Improve the noise resistance by adopting dedicated IC(DC 3wire)
*Built-in protection circuit of reverse power polarity(DC 3wire)
*Built-in surge protection circuit(DC/AC)
*Built-in over current protection circuit(DC type)
*Available to check the status of operation by Red LED indicator
*Waterproof structure by IP67(IEC standard)
*Replacement of spatter-resistance type limit switch