Smartsaa offers hall effect proximity switches with high response speed. These switches are used for sensing speed of turbine, motors and high speed equipment. The hall effect sensor senses geared teeth and gives switching output. Application: speed sensing of turbine, motors, compressors and rotating equipments specification : supply : 10-30 v dc op : pnp or npn load current : 200 ma size : m 12 m 18 sensing distance : 1-2 mm object sensed : teeth of geared wheel max operating frequency : 100 k hz enclosure : ni cr plated brass, ip 67 operating temp : 70 degree cent