This mini light meter is stable, safe and reliable to use, and has wide measurement range from 0 to 199,999 lux. It can be widely used for monitoring light intensity in homes, laboratories, office, schools, indoor farming, etc. Features: Split Type Design: the segmentation of the measurement points and reading points with retractable spring, can avoid the influence of strong light on the naked eye. Wide Measurement Range: the measurement range is from 0 to 199,999 lux, Lux or FC unit switchable. Compact Size and Light Weight: you can hold and carry it conveniently. Storage 50 data and delay logging function(1 to 60 seconds selection). MAX/MIN value measurement, data hold and low battery indication function. LCD display with backlight, easy for reading. Widely used for monitoring light intensity in homes, laboratories, office, schools, indoor farming, etc. Specifications: Color: Black + red Material: ABS plastic Display: 3-1/2 digit LCD display, Max reading 1999. Measuring Range: 0-199,999 lux(20000Lux range reading x10; 100,000LUX/200,000Lux range reading x100) Resolution: 200Lux: 0.1Lux; another range: 1Lux Accuracy:3% rdg 10dgts(10,000 lux) 4% rdg 10dgts (10,000 lux) (Calibrated to standard incandescent lamp at color temperature 2856K.) Photoreceptor: Photodiode attached filter Spectral Response: CIE photopic.(CIE human eye response curve) Spectral Accuracy: f'16% Cosine Response: f'22% Temperature Characteristic: 1%/ Sample Rate: 2times/S Repeatability: 2% Data Hold Function: Yes Max/MIN Record: Yes Power Supply: 2 * 1.5V AAA battery (NOT Included) Item Size: Approx. 128 * 55 * 30mm / 5.04 * 2.16 * 1.18in Item Weight: Approx. 171g / 6.03oz Package Weight: Approx. 300g / 10.60oz Package Size: Approx. 24.5 * 9.5 * 5.5cm / 9.65 * 3.74 * 2.16in Package List: 1 * Digital Lux Meter 1 * Protection Bag 1 * User Manual(English)