Feature: Used to monitor the household voltmeter, also applied to other AC voltmeter measuring. This meter can measure multiple parameter of voltage, current, active power, and energy. Power-off data save function of cumulative power, working time, display status and backlight on/off status. Good stability and high measurement accuracy. Easy to read, install and use. Specification: : PEACEFAIR Model: PZEM-006 Working voltage: 80-260VAC Test voltage: 80-260VAC Test current: 0-100A Rated power: 100A/22KW Operating frequency: 50-60Hz Measurement accuracy: 1.0 grade Weight: 100g Function: Electrical parameter measurement function (voltage, current, active power, energy). Running time function (records the load accumulated operating time). The reset function of energy and running time keys. Backlight function. Store data when power-down (store the accumulated energy, running time, display items, the state of backlight on or off). Large screen LCD (display voltage, current, energy, active power, the accumulated running time) The description of keys function: UP KEY: 1. In normal display state, short press the UP key will reversed circularly display time, power, energy, current, voltage. 2. Short press the UP key will exit the reset state when energy and time are in the reset state. DOWN KEY: 1. In normal display state, short press the DOWN key will sequential circularly display voltage, current, energy, power, time. 2.Short press the DOWN key will exit the reset state when energy and time are in the reset state. SET KEY: 1. In energy or time display state, long press 3 seconds will enter into the energy or time reset state. OK KEY: 1. In the normal display state, short press the OK key will turn on or off the backlight. 2. In energy or time reset state, press the OK key will reset the energy or time and quit the reset state. Function setting: Reset cumulative time, energy setting: In normal display state, short press UP or DOWN key to switch to the cumulative time or energy display menu. Long press the SET key for 3 seconds until flashing screen appears, then release the key. Press OK key, the cumulative time or energy data will be cleared, and LCD screen returns to the cumulative time or energy display items, if you don't want to clear, then press UP or DOWN key to exit the reset state and return to the menu display. Precautions: This module is suitable for indoor, please do not use outdoor. Applied load should not exceed the rated power. Wiring order can't be wrong. Package List: 1 x Digital Voltmeter 1 x Current Transformer