It is a digital illuminometer, used for measuring visible brightness, screen display, wide measuring range, up to 200000LUX, automatic conversion range. Can be widely used in such as schools, hospitals, factories, airports, families and other occasions of brightness measurement. Color: Black Material: plastic Features: Measurement visible brightness, measurement range is wide Illuminance unit switch Unit of illuminance:, Measurement time: S MAX/ MIN Data HOLD Backlight function Auto Power Off function Low-battery indicator Package Contents: 1 x illuminance meter 1 x Chinese and English instruction manual Only the above package content, other products are not included. Note: Light reflection 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.