A.Main Function 1. Electrical parameter measurement function (voltage, current, active power, energy, frequency, power factor) 2. Overload alarm function (over power alarm threshold, backlight and power flashing to alarm). 3. Power alarm threshold preset function (can set power alarm threshold). 4. The energy can be reset use the key. 5. Store data when power off. 6. Large-screen LCD 7. Backlight function. B. Appearance and Key function Display interface is large-screen LCD, it can display six parameters at the same time. 1. Power: test range: 0~22000W, Starting measure power: 0.5W 2. Energy: test range: 0~999kWh 3. Voltage: test range: 80~260V 4. Current: test range: 0~100A,Starting measure current: 0.02A 5. Frequency: test range: 45~65Hz 6. Power factor: test range: 0~1PF C.Specification parameters 1. Working voltage: 80 ~ 260VAC 2. Test voltage: 80 ~ 260VAC 3. Rated power: 100A/22000W 4. Operating frequency: 45-65Hz 5. Measurement accuracy: 1.0 grade