... , pollution-free;Complete electrical protecting controller device, against under-voltage, over-voltage, over-flow, over-load, waterless, etc;automatically recovery;control ... accident or mishandling during shipment, connecting to improper line voltage, or serviced by anyone other than an authorized factory ... always. XINYA 3inch 36V impeller solar energy water pump home system (3SPC2.8/52-D36/500)