... 3) Easy installation 4) Wide application,Long lifespan led sensor lamp ParameterPower Source: 100~130V/AC 220~240V/ACPower Frequency ... unsafe problems. 2, Applies in level control and temperature settings of household Appliances, such as Refrigerator, Washer, Water dispenser, Air ... Automobile Counter, Door Induction System, Water Tank's temperature detecting and Oil level control, etc... Pictures: