The BC10-QF5.5-AP6X2 is a Capacitive Proximity Sensor with 3-wire DC PNP output and normally open contact switch element function. It is designed for non-contact and wear-free detection of electrically conductive as well as non-conductive metal objects. The housing is made of plastic. It provides cyclic short-circuit protection and wire breakage/reverse polarity protection. It has green LED for power-on and yellow LED for switching state indication.