Features Comprehensive Electrical Parameter Measurement: This AC Multifunction Digital Meter can accurately measure various electrical parameters including voltage, current, active power, energy, frequency, and power factor, providing you with valuable data for monitoring and analysis. Overload Alarm Function: The meter features an overload alarm function which alerts you when the power exceeds the set threshold. The backlight and power flashes as a visual alarm, ensuring you are aware of any potential issues. Power Alarm Threshold Preset: You can easily set the power alarm threshold according to your needs. This allows you to monitor and control your power consumption to prevent wastage and improve efficiency. Energy Reset and Data Storage: The meter enables you to reset the energy measurement, allowing you to start tracking energy consumption from a desired point. The device also has data storage capability, ensuring your measurement data is saved even when the power is off. User-Friendly Design: With its large-screen LCD and backlight function, the meter provides clear and easy-to-read information. The display format for each parameter is user-friendly, making it simple to understand and track the measurements. Specification:Brand:PEACEFAIRModel: PZEM-022 Working voltage: 80 ~ 260VACTest voltage: 80 ~ 260VACCurrent:100ARated power:100A/22000WOperating frequency: 45-65HzMeasurement accuracy: 1.0 gradeSize: 9*5*2.5cm/3.5*2*1inWire length:19cm/7.5inWeight: Approx.110g/3.9oz Package list:1 x AC Multifunction Digital Meter1 x Closed Type CTNote:1. This module is suitable for indoor, please do not use outdoor.2. Applied load should not exceed the rated power.3. Wiring order can't be wrong. Package List 1 x AC Multifunction Digital Meter 1 x Closed Type CT