Feature: Can measure voltage range of AC 80V-260V and current of 0-100A. The meter can only measure the active power(real power). It doesn't show Apparent power. Adopted STN whole viewing angle LCD, it can be clearly seen from 360 degree view. With overload alarm function, reset energy function, power alarm threshold preset function, etc. Store energy data when power off(can be reset). With split-core structure Current Transformer. Specification: Brand: PEACEFAIR Model: PZEM-011 Working voltage: 80-260VAC Test voltage: 80-260VAC Test current: 0-100A Rated power: 22kW Operating frequency: 50-60Hz Measurement accuracy: 1.0 grade Weight: 137g 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). Reset energy function. Store data when power off. STN whole viewing angle LCD (display voltage, current, active power/energy at the same time) Backlight function. Display format: 1. Power: test range: 0-22kW within 1KW, the display format is 0.0-999.9W; 1KW and above, the display format is 1000-9999W; 10kw and above, the display format is 10.0-22.0kW. 2. Energy: test range: 0-9999kWh Within 10KWh, the display format is 0-9999Wh; 10kWh and above, the display format is 10-9999kWh; Over 9999kwh will return 0. 3. Voltage: test range: 80-260V Display format: 80-260V 4.Current: test range: 0-100A Display format: 0.00-99.99A Backlight control: Press the light key to open or close the backlight, the backlight state will be automatically saved when the power is lost. Power cleared: Step1: Long press set key for more than 3 seconds until the power display area digital flashing, and then release the button. Step2: If you short press set key again, the power data is cleared and the cleared status is cleared. If you short press light key again, the power data is not cleared and the cleared status is cleared. If there is no keystroke within 10 seconds, the power data is not cleared and the cleared status is cleared. Power alarm setting: Step1: Press and hold light key for more than 3 seconds until the power display area is flashing, then release the button. Step2: Power display area shows the current power alarm value and the minimum number of start flashing, short press set key on the number +1, short press light key to switch to set the number of alarm value, the alarm value can not exceed 25kW (factory default 25kW). Step3: When the setting is completed, press light key for more than 3 seconds or no key action for more than 10 seconds, the data is saved and the setting status is exited. Power/Energy switching: You can short press set key to switch to display the current power / cumulative power consumption, display state power-down automatically saved. Precautions: This module is suitable for indoor, please do not use outdoor. Wiring order can't be wrong. It can't be used for inverter. Package List: 1 x Digital Voltmeter 1 x Split-core Current Transformer