Features SCALABILITY AND EXPANDABILITY: The power energy meter design allows for easy integration of additional sensors and functionality, ensuring it remains adaptable to evolving power needs. HIGH ACCURACY MEASUREMENT: Utilizing precision sensors and advanced processing algorithms, the power energy meter provides highly accurate measurements of voltage, current, power, and other electrical parameters. This ensures energy management and reduces the risk of equipment overload or malfunction. CLOSED-TYPE CT: The integrated closed-type CT enhances safety and convenience by eliminating the need for external current transformers. It also minimizes installation complexity and space requirements, making the power energy meter suitable for compact electrical installations. ROBUST CONSTRUCTION: Designed with quality materials and robust enclosures, the power energy meter is resistant to environmental factors such as dust, water, and temperature extremes. This ensures long-term durability and reliability in harsh industrial environments. COMPREHENSIVE DISPLAY FEATURES: The large, clear digital display not only shows real-time electrical values but also provides alarm indications. This aids in quick identification of anomalies and informed decision-making. Specification: Model: PZEM-022 Working voltage: 80 - 260VAC Test voltage: 80 - 260VAC Current:100A Rated power:100A/22000W Operating frequency: 45-65Hz Measurement accuracy: 1.0 grade Size: 9*5*2.5cm/3.5*2*1in Wire length:19cm/7.5in Weight: Approx.110g/3.9oz Key function: 1. Backlight control 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. 2. Reset energy Step1: Long press the key 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. 3. Power alarm setting: Step1: Long press the key until the LCD screen displaySET CLr, then release the key to enter the setting state Step2: 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. Package list: 1 x AC Multifunction Digital Meter 1 x Closed Type CT Package List 1 x AC Multifunction Digital Meter 1 x Closed Type CT