The pressure switch adopts the high precision, high stability of the pressure sensor and the transmission circuit, and then through the special CPU modular signal processing technology, to realize the detection, display, alarm and control signal output of the medium pressure signal. Pressure switch can be widely used in petroleum, chemical industry, metallurgy, electric power, water supply and other fields on all kinds of gas, liquid gauge pressure, pressure measurement and control, is the ideal industrial field intelligent measurement and control instrument. A variety of fluids with high precision digital pressure switch ZSE/ISE50·60