It is a Digital Tester/Multimeter, Rated power: 20A/4500W, Working voltage: 80V~260V, Voltage measuring range: 50V~300V, Current measuring range: 0.01~20A, Frequency measuring range: 45~65Hz, Power measuring range: 0.01W~4500W, Energy measuring range: 0.01W~99999kWh, Applications:The meter can be used in charger, inverter, solar energy, wind turbines, LED lights measurement, distribution box, voltage regulator,education appliances, appliance Repair, flapper, industrial equipment,electronic equipment measurement or other products.