Btmeter Digital Light Meter, 1-400000Lux Illuminance Meter for Plants, Photography Lab, Classroom, Bedroom

About This Item: High accuracy and fast response speed. Reliability and durability have been greatly improve Wider measurement range Low battery indicator The LCD display has low power consumption and makes data reading convenient The separate light sensor can be rotated unilaterally at 90 degrees or 270°, allowing the user to take measurements at the optimal position     Specifications： Display: Max display reading of 3999. Measurement range：1-400,000Lux Resolution：0. 1LUX/FC Accuracy: ≤10000Lux: ±4%rgd±1.0%f.s ≥10,000Lux: ± 5% rgd±1.5% f.s ≥200,000Lux: ± 8% rdg+2.0%f.s (calibrated to standard incandescent lamp, tempe rature at 2556K) Retest：±2%； Photosensitive element: A silicon photodiode. Temperature measurement range：-10℃~50℃ Temperature：±1℃，Resolution：0.1℃ Operating temperature and humidity：-0℃～40℃（32～104℃）0～70% Rh Storage temperature：-10℃～50℃（14～122℃）0～ 80% Rh Dimensions：175×60×33 mm Weight: Approximately 139 g (including battery) Power supply: 2 *