As has already been described in another review, the pump is not suitable for the dirty water. The sensor technology already makes problems in rainwater. The pump is well made but the sensor technology makes permanent Porbleme. It works only when the sensors are cleaned regularly. It's too dangerous to use the pump without supervision. If the sensors do not work, it does not stop to pump on. If it is not switched off in time in the case, then it is broken (= too warm).
