【High quality & safety】KETOTEK ammeter voltmeter din rail is made of high quality ABS flame retardant material and high precision chips to ensure safe use. 【Technical indicators】Voltage: AC 80V-300V, Current: AC 0.0-100A, Active power: 0.0-30000W, Electric energy: 0-99999kwh, Electric energy of cumulative time: 0.00-999.59h, Power factor: 1.000-0.000, Electric energy of cumulative time: 0.00-999.59h 【One-click data switching】This energy meter is able to display AC voltage, AC current, power factor, active power, electric energy and electric energy of cumulative time. The red and green LED can help you get the digital easy. When pressing the SAM CK button, the meter will change to display the measurement result of power factor (cosφ), cumulative time electrical energy (h) and the electricity (kwh), the correlative red LED will light up. 【More function】1.Data reset for multiple measurement needs. When the energy meter displays electrical energy, press the SAM CK button for five seconds, the meter will be reseted. 2.The value of electric energy and electric energy of cumulative time will be automatically saved when power off, and when the measurement power is reconnected, the meter will go on cumulating data. 【Multi-field application】This electricity meter is easy to instal and can be used in school, market, home, industry, laboratory and other fields. This electricity meter can be used to measure non-standard sine wave from inverter. If used for three-phase power L1, L1, L3 and N, only one of live wire and neutral wire can be connected to measure., Weight: 0.30203329894 pounds, Manufacturer: KETOTEK