The ASK-P3/P4 microprocessor-based level controller evaluates reed-switch signals from a magnetic float level sensor. Relay outputs can operate a solenoid-valve coil or motor contactor, while two alarm relays can provide audible or visual warnings. A separate pushbutton can provide manual control.

The controller stores output status in memory and resumes from the stored state after a power interruption. Use it with compatible level sensors and the specified control wiring.