Electronic pressure switch amplifies pressure signal through high-precision instrument amplifier, collects and processes data through high-speed MCU, and makes temperature compensation by built-in temperature sensor. It is a high-precision equipment for detecting pressure and liquid level signal and realizing pressure and liquid level monitoring and control. Widely used in chemical industry, machinery, hydrology, electric power, environmental protection and other measurement of gas, liquid pressure automation system. Because the adjustment is convenient and flexible, the installation is simple, it can replace most of the occasions where the liquid level switch is used. Features: High precision AD and high speed microprocessor, full digital design; 4 digit digital tube display current pressure or liquid level value; The pressure or liquid level can be set according to their own needs; Three units can be selected according to customer requirements: Bar, PSI, Kpa; High and low pressure or level alarm points can be set, and output to the control equipment through relay or optical coupler; Output double relay (single pole double throw) switching quantity; Two-channel relay/two-channel optocoupler/with 4-20mA/0-10V output can be selected; Adopts high precision pressure sensor, higher precision than mechanical pressure switch, less hysteresis, fast response, stable and reliable; Adjust no dead zone, can be arbitrarily set in the whole range of the relay operating pressure point; The use of buttons to adjust the action pressure, easy to use, more flexible; Protection, etc. : IP65, can be used in harsh environment; Technical parameters: range: -1BAR ~ 200MPa; Power supply voltage: 12~35V DC (24V DC calibration voltage)/AC 220vAC power supply output relay capacity: 220V AC 3A, 24V DC 5A; Precision: better than 0.5%FS setting range: monitoring points can be set in the full range, anti-fluctuation back error setting. Operating temperature: -20℃ -- 85℃;