[Excellent Function your light digital meter equip] Measure range from 1 to 300,000Lux, accuracy less than equal 10,000Lux: ±4%rdg±0.5%f.s, equal 10,000Lux:±5%+10digits(Calibrated to standard incandescent lamp at color temperature 2856K) [Upgrade Accuracy] ±4%rdg ±0.5%f.s (less 10,000 Lux;1,000 FC)/±5%rdg ±10dgt (over 10,000 Lux;1,000FC); Resolution:0.1Lux/0.01Fc; 0.1 - 300,000Lux/1 - 30,000FC; Measurement speed: 2 times / second. [270 Degree Rotatable Detector] Keep an eye on the light level anywhere in the room;The light meter sensor can rotate 270 degrees, So you don't need to move the light meter,just need to rotate the degrees to measure the lights that you need. [Multifunction And Easy To Operate] Rapid Response, Auto , Data Hold & -Data hold switches, Low power consumption, MAX/MIN Hold,Relative Value,℃/℉ Switch,with LCD backlit Note:Due to different factory batches, if there are differences in printed words, it not affect the use. Power Supply:2 x AAA batteries(Not included batteries) Colour:Yellow & Black Material:plastic Package Contents: 1 * Digital Lux Meter 1 * 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.