GRL18 N2437 SICK retroreflective photoelectric sensor cylindrical detectable range up to 7 2 m 4 pin male M12 connector NPN output visible red light source threaded GRL18 series
GRL18 N2437 SICK retroreflective photoelectric sensor cylindrical detectable range up to 7 2 m 4 pin male M12 connector NPN output visible red light source threaded GRL18 series