1、AC digital multi‑function meter can display voltage + current + power + power factor. The voltage measurement range is 40~400V, and the current measurement range is 0~100A. 2、Embedded installation method is flexible and not easy to break. The voltage connection terminal adopts the recessed design to prevent electric shock. 3、Powerful function, simple design, brand new industrial design, innovative and practical structure, integrated built‑in transformer design. 4、Current non‑contact measurement, safe and non‑heating, simple wiring method, abandon tedious and wrong connection (only voltage connection, no distinction between neutral wire of live wire). 5、Wide range of applications, suitable for high and low power distribution cabinets, showcase display racks, photovoltaic inverters, assembly line testing, electronic maintenance, electronic DIY, etc. Item Type: AC Digital Meter Material: ABS Color: As shown in the picture Overall Size: Approx.72.3x40x41.5mm/2.85x1.57x1.63in Model: PZEM - 028 Test Range: 40~400V Measurement Accuracy: ±1% Current: Measuring Range: 0~100A Display Format: <10A display such as: 1.00A, <100A display such as: 10.0A, ≥100A display such as: 100A Power: Test Range: 0~22kW Display Format: <10W display such as: 5.0W, <100W display such as: 50.0W ＜1000W display such as: 500W, ＜10000W display such as: 5.00kW, ≥ 10000W display such as: 22.0kW Starting Power: 2.2W Measurement Accuracy: ±1% Power Factor: Measuring Range: 0~1 Display Format: Such as 1.00PF Other Functions: The Control of Backlight: The backlight can be turned on or off by short pressing the button Error Function: Normally, the calibration is: 100%, and the user can adjust the error manually. 1 x AC Digital Meter 1 x Instruction Manual