Features: This light meter has 3-range settings，2,000 for Lux range: reading x 1； 20,000Lux range: reading×10；100,000Lux range: reading×100. The light sensor and the display body are split. The sensor can freely choose the direction and height of the illuminance, and the reading is more convenient and the measurement is more user-friendly. Providing high reliability and durability.LCD display provides low power consumption and clearly read out evening high ambient light. Accuracy: ±4%rdg±0.5%f.s (more than 10,000 for lux accuracy is ±5%±10 words) (corrected with color temperature 2856K standard flat light). The calibration interval for the photo detector will vary according to operational conditions, but generally the sensitivity decreases in direct proportion to the product of luminous intensity by the operational for time. In order to maintain the basic accuracy of the instrument, periodic calibration is recommended. Specifications: Material: ABS+Metal Size: 130x72mm/5.12x2.83in Display: 3 1/2 bit LCD displays, max reading: 1999 Accuracy: ±4% RDG ±0.5% F.S (Over 10,000Lux accuracy ±5%±10 (calibrated with standard flat light at 2856K colour temperature) Range : 2000Lux, 20,000 for lux,100,000 for Lux 2000x1 20,000x10, 100,000x100. Resolution: 1Lux Repeat test: ±2% Temperature characteristic: ±0.1%℃ Sampling rate: 2 times/second Read value locking function Photosensitive: photodiode filter lens plate Package Includes: 1x Light Meter note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.