Features: This pressure controller is specially used for water pump automatically turn on/off. Default pressure range is 0.14-0.28Mpa, if pressure0.280.02MPa, controller is disconnected. The upper and lower threshold of the switch pressure can be adjusted within the adjustment range. Controller has 2 springs to adjust pressure threshold, easy to adjust and accurate. It will automatic turn on pump when pressure is less than the set threshold of switch, and automatically turn off pump when pressure is more than set threshold. Specifications: Rated Voltage: 220VAC Rated Current: 10A AC Rated Isolation Voltage Ui: 380V Rated Conditional Short-Circuit Current: 1000A Fuse Model for Rated Conditional Short-Circuit Current Test: RL6-10/25A Conventional Thermal Current Ith: 10A Thread Size: ZG1/4(internal and external Set Pressure: 0.14-0.28Mpa Size: 10*9.5*7cm/3.9*3.7*2.7in Weight: 356g(approx.) Installation Note: 1. When installing this pressure controller, the connection thread should be well sealed without water leakage; otherwise it may cause motor frequent turning on and off and eventually burning-out. 2. Wire inlet and outlet should be well fixed, in order to prevent any wire damage. Package Includes: 1 x Switch Package List 1This pressure controller is specially used for water pump automatically turn on/off 2Default pressure range is 0.14-0.28Mpa, if pressure0.280.02MPa, controller is disconnected 3The upper and lower threshold of the switch pressure can be adjusted within the adjustment range 4Controller has 2 springs to adjust pressure threshold, easy to adjust and accurate 5It will automatic turn on pump when pressure is less than the set threshold of switch, and automatically turn off pump when pressure is more than set threshold