BENETECH GM1030 Portable Split Digital Illuminometer LUX Meter, GM10301. Divided into 4 gears, ?? 1 gear: 0. 0 199. 9Lux, ?? 10 gears: 20. 0*10 199. 9*10Lux, ?? 100 gears: 20. 0*100 199. 9*100Lux, ?? 1000 gears: 20. 0*1000 199. 9* 1000Lux 2. Can be connected by Bluetooth, easy to use 3. USB computer analysis software, data automatic manual storage 4. Backlight and data retention, automatic switch meter settings 5. Good quality and long service life Specification: Package Weight One Package Weight 0. 75kgs 1. 65lb One