Water shortage monitor specially designed for booster pump sets. Stops the motor and protects the pump in case of water shortage or overload. Detects the presence of water in the pipe via an electrode. For direct connection to a 230V AC motor up to 1.5 Hp without a relay. Includes a connection cable to the motor (3X1mm), approximately 50 centimeters long, and one electrode with a half-inch thread. It is installed in a Schuko socket with a common ground with the motor and the piping. If the piping is plastic, two electrodes must be used, one of which is grounded. Relay contact: 30A-AC1-250V max