Fork sensors, WF, WF15-40B410, Communication interface: -, Setting: Plus-minus button, Light transmitter: LED, infrared, Fork width/depth: 15 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