Functional Features: Sealed structure, waterproof, dustproof, and oil-proof, and can work reliably in harsh environments. The output is a square wave signal with stable amplitude, high resolution, wide frequency response, strong resistance to various interferences, high reliability, small error, high linearity, high sensitivity, long life, stable output amplitude, and can achieve long-distance transmission. Product applications are widely used in electronic speed conveyors, machinery, chemical industry, transportation, automatic control, automobiles, engines, gear speed and other fields.