Pressure switch 31D series G1/4, flange type characteristic liquid crystal display, high precision, long life, easy to use, pressure difference switch switch is determined by the switching point set value, switching state LCD display, switching time < 5ms, system pressure LCD display, adjustable hysteresis, off-line pressure adjustment, optional electronic locking function. Medium: filtered lubricated or unlubricated compressed air and neutral air Electrical connection: DIN43650 or M12×1 plug working pressure: -1-25bar Working environment temperature: -10℃-+60℃ medium temperature: -10℃-+80℃ Temperature sensitivity (zero) : final value 0.4%/10K temperature sensitivity (range) : Final value 0.2%/10K switching point: 0-100% adjustable in full scale range set point: 0-100% adjustable in full scale range linear: < final value ±0.5% protection, etc. DIN40050: IP6531D series pressure switch is a kind of electronic device for pressure monitoring and open and closed loop control. The switch includes a built-in pressure sensor and a built-in electronic computing device. Material shell: cast zinc seal: O-ring nitrile rubber sensor: silicon wafer