Features • Comprehensive Electrical Monitoring: Measure voltage, current, active power, and energy with precision, ensuring you have all the key data at your fingertips for effective management • Overload Alert System: Stay informed with an overload alarm that activates when power exceeds the preset threshold, featuring visual alerts for enhanced safety and awareness • Customizable Alarm Settings: Easily set your own power alarm threshold to meet your specific requirements, providing tailored protection for your electrical devices • Convenient Backlight Feature: Illuminate the display with a simple key press; the backlight remembers its last setting even after power loss, ensuring visibility in any lighting • Large LCD Display: Experience a clear, large-screen LCD that simultaneously shows voltage, current, power, and energy parameters, making it easy to monitor your electrical performance 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 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. 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 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. 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