This is a high-precision AC digital display meter that can accurately and real-time measure and display the voltage, current, power, energy consumption, frequency, and power factor of AC power grid power equipment, helping users to understand the operating status of the equipment in a timely manner. External 100A transformer. Large LCD screen with full display. Minimalist wiring design, -3.96 plug interface, easy wiring, plug and play. Prevent wrong connection and short circuit. Overload alarm function: You can set the power alarm threshold by yourself. Electricity button reset function. Electrical parameter measurement function. Power-off data saving function: Automatically save when the backlight is powered off. Parameters: AC current range: 0-100A AC voltage range: 80-260V Power range: 0-22000W Energy consumption range: 0-999kwh Colour:Black Material:nylon Package Contents: 1 x AC Digital Display Meter 1 x coil CT Only the above package content, other products are not included. Note: Light reflection 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.