[0.1~400,000 Lux/FC]Accurately measures the light 0.1 ~ 400,000 Lux/FC (resolution: 0.1; accuracy: +/- 4% of rdg), ambient temperature (℃/℉ optional), sampling of 2 ~ 3 times/s, max/min, relative value measurement, bar. agraph, agraph, agfrom different light sources. fast. [32 sets of data logging]Records up to 32 groups of data; Measurement of Max/Min; REL mode shows the difference between current and recorded value; Data Hold freezes measured data and reads later. Everything facilitates data collection, comparison, trend analysis. [270° flexible measuring angle]270° rotating photo detector sensor provides more flexibility to reach any angle of measured light sources. No need to turn the whole light meter, just the head, and you get instant reading in front. [Optimal lighting for your plants]Thanks to the advanced light-sensitive sensor technology, this lumen tool tells the right lights at school, home, office, greenhouse, residence, aquarium, laboratory, indoors and outdoors. Ideal for adjusting optimal brightness in different rooms and changing suitable light and ambient temperature for your plants, orchids. [100% Worry Free Product Guarantee]Comes with zipper carry bag, easy to carry for different scenarios: living room, library, hotel, factory, live house, photo studio, cinema, etc. General features: Automatic shutdown. Low battery indicator. 32 Sets Data Storage 2.3 inch LCD display Max. Min. Measurement: Ambient temperature (℃/℉ optional). Difference between AI-8801A and 8801B AI-8801A adjusts color LCD. AI-8801B adjusts black and white LCD with high brightness. Test specifications: Temperature: ±1℃ Repeatability: ± 2% Resolution: 0.1Lux/FC Range: 0.1-400,000 lux. Accuracy: ± 4% of reading + 1.0% f (≤ 10,000 lux); ± 5% of reading + 1.5% f.s (≥ 10,000 lux); ± 10% of reading + 2.0% f.s (≥ 200,000 0 Lux). Photodetector: silicone photodiode with filter. Power supply: 9V battery Consumption current: approx. 5mA Storage temperature: -10°C t