Features: This instrument is simple and easy to operate with switchable ranges. 3 12 digits 18mm LCD display for clear reading. Simple structure, convenient carrying and good stability. Elaborate integrated circuit provides high reliability and durability, permits a wide range of light measurements. It is widely used for factory, warehouse, school, office, family, street lamp construction, laboratory and so on. Specifications: Display: 3 12 digits LCD display Battery: 1 x 9V 6F22 battery (NOT included) Measuring range: 1100,000Lux. (3 Ranges) 20,000Lux range: reading x 10 100,000Lux range: reading x 100 Accuracy: less than 10,000Lux, +(4percent rdg+10digit) >10,000Lux, +(5percent rdg+10digit) Resolution: 1Lux Repeatability: +2percent Temperature Characteristic: +1percent celsius Sampling Time: 0.5 second Photo detector: one silicon photo diode with fliter Color: As picture shown Number height: 18mm 0.71inch Size: Approx. 130 x 72 x 30mm 5.11 x 2.83 x 1.18in Weight: Approx. 231g Package Included: 1 x Light Meter 1 x Carrying Case 1 x User Manual .This instrument is simple and easy to operate with switchable ranges 3 12 digits 18mm LCD display for clear reading Simple structure, convenient carrying and good stability Elaborate integrated circuit provides high reliability and durability, permits a wide range of light measurements It is widely used for factory, warehouse, school, office, family, street lamp construction, laboratory and so on