Usage Tips:Wide Range of Measurement: Measures light from 0 to 200,000 lux, making it suitable for a wide range of applications. Accurate Readings: meter provides accurate readings of light levels, ensuring that you get the most precise measurements every time. Easy to Use: With its simple design and easy-to-read LCD display, this lux meter is incredibly user-friendly. The digital light meter allow you to measure the lighting in an area. The digital light meter uses a 9V battery(not included); Accurate up to 200,000Lux +/- 5% Hold function, Autorange & Manual range,Auto Power OFF: Afterapprox.15 minutes. Specifications: 1. Display:Large LCD characters display 2. Range:0.1-200,000Lux, 0.01-20,000Fc 3. Resolution:0.1Lux/0.01Fc 4. Accuracy:±4% 5. Measurement speed:2 times/second 6. Units:Lux & Fc 7. Hold function, Auto range & Manual range 8. Auto Power OFF:After .15 minutes 9. Power Supply:One 9V battery.(not included) 10. Low power of battery detecting 11. Operating Environment:14 to 122℉(-10 to 50℃), 10%-90%RH Colour:Gray Material:Plastic Package Contents: 1 * Digital Luxmeter 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.