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.Colour:blackMaterial:plasticSize:7.3cm*3cmPackage Contents:1* multimeter1* opening and closing CTOnly 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.