The NRGS 15-1 compact system measures using the conductivity principle. It can indicate a maximum of four water levels in electrically conductive media:
MAX alarm
First MIN alarm
MIN alarm with lock
Pump ON, OFF each with a switchpoint or, alternatively, time-driven.
The NRGS 15-1 has a level switch integrated in the electrode body, which controls all functions. No external switching device is necessary.