AC 22KW 110 220V Digital Voltmeter Ammeter 20A 100A Current Voltage Meter Power Energy Amps Volt wattmeter tester detector Features and specifications: This combo meter is designed to monitor AC power. It combines several functions into one. -Voltage: 85-250VAC -Current: 0.01-20A / 100A( Please choose the range you need, if you choose 100A, please connect it as 100A wire connection, no matter what current you test) -Energy:5-digits, 0.01 99999KWH - Compatible frequency 50/60HZ -Built-in current sensor -Power Supply: 85-250Vac (self-powered) -Voltage Range: 85V-250V -Current Range:0.01-20A /100A -Resolution:1V, 0.01A, 0.01W, 0.01kWh -Display Type: LCD -Dimensions: 84 x 46 x 26 mm Functions: 1. Electrical parameter measurement function (voltage, current, active power, power). 2. Overload alarm function (over power alarm threshold, the back-light and power flicker tips). 3. The power alarm threshold preset function (can set up your own power alarm threshold). 4. The power button clear function. 5. Power-down data storage function. 6. Large-screen LCD screen full display function (display voltage, current, active power, power). 7. Backlight. Package Content 1 x AC Voltage Current Power Energy Meter (100A come with CT , 20A come without CT)