Small light barriers, W12-2 Laser, max. switching distance: 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, setting: none, laser class: 2, included in delivery: 2 x clamp holder BEF-KH-W12, incl. screws