Fork sensors, WF, WF120-40B416, communication interface: -, setting: plus-minus button, light transmitter: LED, infrared, fork width/depth: 120 mm, 42 mm, smallest detectable object (MDO): 0.2 mm, switching output: PNP/NPN, switching type: light/dark switching, connection type detail: connector M8, 4-pin, switching frequency: 10 kHz, response time: 100 µs