orThe Selsor QO18600RPK is an PNP (polarity Positeve-Negative) type Photoelectric Sensor with a detection range of 0 to 0.6 meters (2 feet). The sensor operates as a DARK-ON, LIGHT-ON with 200mA maximum current draw. This sensor is a Industrial grade sensor and is capable of working in difficult factory environments. This high precision device is designed to detect objects or persons from a 0 to 0.6 m range at a maximum current of 200mA.