How it works:
Send a signal to the solenoid coil or motor contactor through the relay output for automatic control. It is also possible to receive a signal or a light warning via two relays for an alarm. This switch can be operated manually with additional buttons. The ASK-P3 / P4 level controller is used with the level sensor. The magnetic field of the magnet in the buoy moves along the pipe relative to the liquid surface, and when it is aligned with the reed sensor, the circuit is turned on or off.
With the reed sensor change, alarm or level information can be evaluated with ASK-P3 / P4. It is capable of storing output information in memory. In the case of recovery after the energy is cut off, it can continue to work from the cut-off.

Benefits:
can store output information in memory;
Based on microprocessor operation.