Feature: 1. This pumptrol water pressure switch automatically turns on the pump when the pressure is lower than the switch set threshold 2. It will automatically turns off the pump when the pressure exceeds the set threshold. 3. The upper and lower limits of the pump pressure switch can be adjusted within the adjustment range. 4. There are two springs in the controller, which are convenient and accurate to adjust. 5. The pressure threshold of water pump pressure switch can be adjusted by the well pump pressure switch. Specification: Item Type: Pressure Control Switch Material: Ferroalloy + ABS Size: Approx. 10.5x10x7cm / 4.1x3.9x2.8in Purpose: Water Pump Mechanical Switch Pressure Controller Color: Gray Model: JSK-2 Rated Voltage: 220V AC Rated Current: 10A AC Maximum Working Pressure: 100000-500000 (Pa) Thread Size: ZG1/4 (Male Thread) Setting Pressure: 0.14-0.28Mpa Rated Isolation Voltage Ui: 380V Rated Condition Short Circuit Current: 1000A. Package List: 1 x Pressure Control Switch Note: 1. When installing this pressure controller, the connecting thread should be well sealed and not leaking; otherwise, it may cause the motor to start and stop frequently and eventually burn out.2. The inlet and outlet must be fixed well to avoid damage to the wires.3. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.