Digital Multimeter:This power energy meter can measure and display voltage current active power energy frequency and power factor at the same time.with split current transformer,more convenient to install. Overload Alarm function:Backlight and power will flash simultaneously to give an alarm when exceeding the preset value.You can preset power limit by yourself. Automatic Data Storage Function:The last test data is stored automatically when the power supply abruptly lose. Don't worry about data loss due to sudden power outages. One-Press Control:The button can be used to control the backlight,reset energy, preset power alarm limit. LCD Display:Large-screen LCD with all sight 180 degree view,The blue backlight can be turned on/off manually. Function: 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. Large-screen LCD (display voltage, current, active power, energy at the same time). Backlight function. Working voltage: 80 ~ 260VAC Test voltage: 80 ~ 260VAC Rated power: 100A/22000W Operating frequency: 45-65Hz Measurement accuracy: 1.0 grade Display format Power: test range: 0~22kW Within 1kW, the display format is 0.0~999.9W; Within 1kW~10kW, the display format is 1000~9999W; 10kW and above, the display format is 0.1~22.0kW. 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: 0~100A Display format: 0.00~99.99A Precautions: 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. 4. It can't be used in some circuit such as inverter or silicon controlled. Colour: black Material: composite material Size: 9x5cm Package Contents: 1 * Power Monitor 1 * Split CT 1 * English instructions Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.