PEACEFAIR PZEM-021 AC Digital LCD Voltmeter Power Meter For Energy Measurement☜

Feature: \n 1. Electrical parameter measurement function (voltage, current, active power, energy).\n2. Overload alarm function (over power alarm threshold, backlight and power flashing to alarm).\n3. Power alarm threshold preset function (can set power alarm threshold).\n4. Backlight function, short press the key to turn on or off the backlight, the backlight has memory function, it can store the on or off state when power off.\n5. Display interface is large-screen LCD, it can display voltage, current, power, energy parameters at the same time. \n\nSpecification: \n\nFeatures: \n\n--\n\nElectrical parameter measurement function\n(voltage, current, active power, energy). \n\n--\n\nOverload alarm function (over power alarm\nthreshold, backlight and power flashing to alarm). \n\n--\n\nPower alarm threshold preset function (can\nset power alarm threshold). \n\n--\n\nThe reset function of energy key.\n\n--\n\nStore data when power off. \n\n--\n\nBacklight function, short press the key to\: