Features • Comprehensive Electrical Measurements - Accurately measure voltage, current, active power, and energy with this advanced digital display, ensuring monitoring of your electrical system • Smart Overload Alarm - Stay safe with a built-in overload alarm that triggers visual alerts when the power exceeds the preset threshold, preventing potential damage • Customizable Power Alerts - Easily set your own power alarm threshold to suit your needs, giving you complete control over your electrical monitoring • Convenient Backlight Function - The intuitive backlight can be activated with a simple button pr, and it remembers its last setting even after power loss for easy viewing • Large LCD Display - Enjoy clear visibility with a large-screen LCD that simultaneously shows voltage, current, power, and energy parameters, making it easy to read and analyze your data Features: 1、Electrical parameter measurement function (voltage, current, active power, energy). 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、Backlight function, short pr 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. 5、Display interface is large-screen LCD, it can display voltage, current, power, energy parameters at the same time. Specification: Features: Electrical parameter measurement function (voltage, current, active power, energy). Overload alarm function (over power alarm threshold, backlight and power flashing to alarm). Power alarm threshold preset function (can set power alarm threshold). The reset function of energy key. Store data when power off. Backlight function, short pr 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. Display interface is large-screen LCD, it can display voltage, current, power, energy parameters at the same time. Specification: Brand: PEACEFAIR Model: PZEM-021 Working Voltage: 80~260VAC Test Voltage: 80~260VAC Rated Power: 20A/4500W Operating Frequency: 45-65Hz Measurement Accuracy: 1.0 grade Power Test Range: 0~4.5kW (within 1KW, the display format is 0.0~999.9W; 1KW and above, the display format is 1000~4500W.) Energy Test Range: 0~9999kWh (within 10KWh, the display format is 0~9999Wh; 10kWh and above, the display format is 10~9999kWh.) Voltage Test Range: 80~260V Display Format: 80~260V Current Test Range: 0~20A Display Format: 0.00~20.00 Weight: 84g(approx.) Package Includes: 1 x Meter Package List