The Model PZEM-022 panel mount lcd power meter is a quick and easy way to measure current, voltage, power, power factor and energy use. Comes with a 100A current transformer (16mm inner diameter). The small button on the front panel serves to turn on the LCD backlight, reset the kWh meter and set the alarm for a power level threshold detection.Comes with one LCD panel and one 100A current transformerFeaturesElectrical parameter measurement function (voltage, current, active power, energy, frequency, power factor)Overload alarm function (over power alarm threshold, backlight and power flashing to alarm)Power alarm threshold preset function (can set power alarm threshold)The energy can be reset use the keyStore data when power offLarge-screen LCDBacklight functionKey FunctionBacklight controlShort press the key to turn on or off the backlight, the backlight has memory function, it can store the on or off state when power off.Reset energyStep1: Long press thekey for 5 seconds until the energy value flash, then release the key.Step2: Short press the key again, then the energy value is cleared and exit the reset flashing state.Step3: If there is no operation on the key within 5 seconds, it means the energy value is not cleared and will exit the reset state.Set power alarm thresholdStep1: Long press the key until the LCD screen display SET CLr, then release the key to enter the setting stateStep2: Power window display the current power alarm value and the last digit begin to flash, then you can short press to plus 1, when there is no operating over 3 seconds, it will switch the digit position automatically, the setting method is as same as the above.Step3: After finish the setting, long press the key over 5 seconds will store automatically and exit, the range of active power threshold is 0.0~2.5kW. it can display six parameters at the same time.Specifications:Working voltage: 80 ~ 260VACTest voltage: 80 ~ 260VACRated power: 100A/22000WOperating frequency: 45-65HzMeasurement accuracy: 1.0 gradeDisplay format:1.PowerTest range: 0~22000WStarting measure power: 0.2W<10W display format: 1.00~9.99W<100W display format: 10.0~99.9W<1000W display format: 100~999W<10000W display format: 1.00~9.90kW10000W display format: 10.0~22.0kW2.EnergyTest range: 0~999kWh<1kWh display format: 0~999Wh<10kWh display format: 1.00~9.99kWh10kWh display format: 10~999kWh3.VoltageTest range: 80~260VDisplay format: 80~260V4.CurrentTest range: 0~100AStarting measure current: 0.001A<10A display format:0.000~9.000A10A display format:10.00~99.99A5.FrequencyTest range: 45~65HzDisplay format: 45~65Hz6.Power factorTest range: 0~1PFDisplay format: 0.00~1.00PFPrecautions:This module is suitable for indoor, please do not use outdoor.Applied load should not exceed the rated power.Wiring order cant be wrong.Package Included:1 xOpen and Close CT Power MonitorDocuments:PZEM-022