2 wire system, save wiring, wiring time is two-thirds of the traditional 3 wire system.

● Save electricity

Compared with the consumption current of the 3-wire system about 10 ~ 20mA, the output of the 2-wire system

The current (current in OFF state) is below 0.55mA, which can save power

● Long operating distance

The detection distance becomes longer and can be set with allowance.