Can work:This product is designed to automatically perform all control operations of the pump. If there is a special fault, such as water shortage, suction pipe jam, etc., this product will confirm the fault, indicating \"failure\" the red light is on, at the same time, a stop signal will be sent to the pump, so as not to damage the pump due to no water. Press the \"restart\" key to allow the system to restart if a failure to correct causes a blockage. When the water pump is supplied, this controller can make the water supply system maintain a constant pressure and reduce the water hammer effect in the water supply pipeline. The controller also has the power off reset function. The starting range of traffic is 36-60l /h, convenient for family use.