DescriptionThis Electric Parameter Meter can let you know the power information easily. It is durable, multi function and easy to use. It can store Energy data when power off, data information can be reset to 0. The blue backlight can be turned on/off manually.Feature- Color: Black. - Material: Plastic+LCD+Electronic Component. - Size: 8.8 x 2.5 x 5cm - Electrical parameter measurement function (voltage, current, power,).- Voltage alarm function (over voltage alarm threshold, backlight and voltage scintillation prompt).- Power button reset function.- Power down data preservation function.- Large screen LCD LCD display function (simultaneously display voltage, current, power, power).- Backlight function.