How does the pressure switch operate?

The operation steps of the pressure switch are as follows: (1) Short press the (ON/OFF) operation key to turn off the operation indicator and the pressure control system is turned off. (2) Set the upper/lower limit of the control. Press the SET button once to enter the lower limit setting state (corresponding to the lower limit indicator light). Set the value by (▲)(▼). After setting the lower limit, press the SET button to enter the upper limit setting. The method is the same as above. (3) After the setting is completed, press the SET button to automatically save the set value to the computer chip (after the parameter is modified, no key operation within 5 seconds will automatically save the current parameter setting). (4) Press the (ON/OFF) operation key again (corresponding to the running indicator light), and the motor starts to work. There is also the ability to use the unit switching method to operate! Just press the (ON/OFF) run button and turn off the run indicator. Short press the increase button (▲) to switch the unit between MPa, Kg/cm and PSI. After the setting is completed, you can turn on the running indicator!