Function1. Measurement function of electrical parameters (voltage, current, active power, energy)2. Overload alarm function (supercharge alarm threshold, backlight and flashing alarm light).3. Power alarm threshold preconfiguration function (power alarm threshold can be set) 4 The power key reset function.5. Save the data when you are off.6. Large LCD screen (display voltage, current, active power, energy at the same time)7. Backlight function.Precautions1. This module is suitable for indoor, do not use it outdoors.2. The requested load must not exceed the rated power.3. The wiring order cannot be wrong.4. It cannot be used in some circuits such as inverter or controlled silicon.Note:There are three types of power: active power (Preamble / unit W), Reactive power (QRpresenta / unitVar), Apparent power (SRepresentation / unitVA)And the power of our product is active power.The active power is calculated as: P = U x I x cos & phi ;, cos & phi; represents the power factor, for exclusively resistive loads (such as incandescent, heater, etc.) the power factor is generally close to 1, for the inductive load and the capacitive load, the power factor is between 0-1; Therefore, when testing the pure resistive load, the power (P) is significantly equal or close to U x I;but when testing inductive or capacitive loads (such as refrigerators, washing machines, televisions, computers, etc.), P Less than U x I. As for the specific number it is related to the power factor, for each device it has a different power factor, So believe in the value of our product.1. Operating voltage: 80 VAC 260VAC2. Test voltage: 80 VAC 260VAC3. Rated power: 100A / 22000W4. Operating frequency: 45-65Hz5. Accuracy of measurements: grade 1.0Screen Format1. Power: Test range: 0 ~ 22kWWithin 1 kW, the screen format is 0.0 ~ 999.9 W;Within 1kW 1010kw, the screen format is 1000 ~ 9999W;10kW or higher, the screen format is 0.1 k22.0kw.2. Energy: Test range: 0 ~ 99kwhWithin 10KWh, the screen format is 0 ~ 9999Wh;10kWh or higher, the screen format is 10 9999kWh.3. Voltage: test range: 80 ~ 260VScreen format: 80 ~ 260V4. Current: Test range: 0 ~ 100AScreen format: 0.00 999.99acenter100% brand new high qualitycolour:blackMaterial:plasticsize:89.6x49.6x24.4mmPackage Contents:1 x PZEM-061 AC Voltmeter Ammeter1 x Coil CTOnly the above package content, other products are not included.Note: Light shooting 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.