Working voltage: 80 ~ 260VAC Test voltage: 80 ~ 260VAC Rated : 100A/22000W Operating frequency: 45-65Hz Measurement accuracy: 10 grade Function: Electrical parameter measurement function (voltage, current, active , energy) Overload alarm function (over alarm threshold, backlight and flashing to alarm). alarm threshold preset function (can set alarm threshold). The reset function of energy key. Store data when off. -screen LCD (display voltage, current, active , energy at the same time) Backlight function. Display format: : test range: 0~22kW Within 1kW, the display format is 00~9999W; Within 1kW~10kW, the display format is 1000~9999W; 10kW and above, the display format is 01~220kW. 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: 000~9999A Precautions: This module is suitable for indoor, please do not use outdoor. Applied load should not exceed the rated . Wiring order can' be wrong. It can' be used in some circuit such as inverter or silicon controlled. Colour: black Material: composite materials Size: 9x5 (mm) Package Contents: 1 * PZEM-061 AC Voltmeter Ammeter 1 * Coil CT 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.