Features • Comprehensive Electrical Measurement: Accurately measures voltage, current, active power, and energy, providing all ential data in one compact device • Overload Alarm Functionality: Features an overload alarm system that alerts you with flashing indicators when power exceeds preset thresholds for enhanced safety • Customizable Alarm Thresholds: Easily set your own power alarm thresholds to suit your specific needs, ensuring optimal performance and protection • User-Friendly Backlight Feature: Quickly toggle the backlight on or off with a short pr; memory function retains the last setting even when powered off • Large LCD Display Interface: Enjoy a clear view of all parameters simultaneously on a spacious LCD screen, making it easy to monitor your electrical usage at a glance 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