Inductive Proximity Switch Sensor LM8-3001NA Proximity Switch , Proximity Sensor,capacitance Proximity Sensor,induction linear sensors,Hall type, ... -off frequency commonly 600Hz7) Wide voltage range8) Dustproof, vibration-proof, waterproof and oil-proof9) With short-circuit protection and inverted connecting ... our best to do for you, many thanks Inductive Proximity Switch Sensor LM8-3001NA