Intelligent Pump Controller M21 is an easy to use, programmable controlling & protection device for single phase deep well submersible pumps, surface pumps etc. It secures against a dry run, voltage drop, overload. It cooperates with liquid level probes, float switches, presssure switches. The product is supplied with a set of three liquid level probes.

There are three versions of the product: for single plase connections and three-phase connections with different power ranges. More data available here.

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Floats. The automatic device controls the pump operation depending on the water level. The floats are available with 60cm, 5m and 10m hose.