Small light barriers, W12, WT12L-2B510, Device type: Light sensors and light barriers, Switching distance max.: 20 mm ... 50 mm, Sensor principle: Reflection light sensor, Detection principle: Background suppression, Switching output: PNP, NPN, Switching type: Light switching, Dark switching, Connection type: Connector M12, 5-pin, Light transmitter: Laser, Light type: Visible red light, Setting: None, Included in delivery: 2 x clamp holder BEF-KH-W12, incl. screws