Panasonic Retro-reflective Photoelectric Sensor 3 m Detection Range PNP IP67 Block Style CX-491-P-Z. Electrical Connection: M8 Connector. Maximum DC Voltage: 24V. Optical Technology: Phototransistor. Light Source: Red LED. Maximum Current: 100 mA. Response Time: 1 ms. Housing Material: PBT. Minimum Operating Temperature: -25°C. Series: CX-400. Maximum Operating Temperature: +55°C.