... is a digit sensor integrated with light,electricity and machine,no machanical contact among coded wheels,with high rotary ... life;especially suitable to movement occasions.Widely applicable to irrigation,CNC machine, textile, eletricity, aircraft, metallurgy, petroleum, chemical and light ... PLC.4,Working pressure: A: 5V B: 5--12V C: 5--24V. Main product: Panel Meter Counter Weighing indicator ...