Panasonic Through Beam (Fork) Photoelectric Sensor 6 mm Detection Range NPN IP40 Fork Style PM-T65W. Electrical Connection: 4-Pin Connector. Maximum DC Voltage: 24V. Optical Technology: Phototransistor. Terminal Type: 4-Pin Connector. Light Source: Infrared LED. Maximum Current: 50 (Sink Current) mA. Response Time: 20 (Received) μs, 80 (Interrupted) μs. Housing Material: PBT (Enclosure), Polycarbonate (Display Section). Minimum Operating Temperature: -25°C. Maximum Operating Temperature: +55°C.