The Level Probe Relay (LPR-1) senses liquid level and provides a relay output for controlling a pump or level alarm. The unit is a, DPDT, 12 pin plug-in, has two inputs, an ON and an OFF, for connection to two electrodes of a conductance probe. All setup is easily done using the DIP switches on the unit.
When used for a level alarm the ON and OFF inputs may be connected to the same electrode on the probe, or the ON input may be used by itself. When used for pump control the ON and OFF inputs are