Currently one of the most common applications of the topology of capacitive power supply are in power meters. Approximately 40% of these meters are mounted outside in the environment. Other typical applications include motion sensors, household appliances, rolling shutters and other products that require low current and a cost effective power supply. Over the years, testing conditions have been standardized. The most common test is conducted at 85% relative humidity, 85°C, for 1000 hours at 240 VAC with a loss of capacitance value of less than 10%.