With their excellent repeatability, our through-beam light barriers are ideal for positioning tasks. They detect objects regardless of surface, color and material. The transmitter and receiver are in separate housings. Long ranges are no problem for the light barriers. They have a large functional reserve and are very resistant to dirt. Series=21M, dimensions=15 x 50 x 42.5 mm, interface=PNP normally open (NO) PNP normally closed (NC), operating principle=optoelectronic sensor, optical operating principle=through-beam light barrier (receiver), light type=laser red light, range=0...60 m, connection=plug connector, M12x1 plug, 4-pin, housing material=zinc, die-cast aluminum, active surface, material=PMMA, operating voltage Ub=10...30 VDC, approval/conformity=CEcULusWEEE