Check the listing for details. Light Meter Luxmeter Luminometer 0-200000Lux Thermometer 2in1 Bluetooth App. Condition: New. Listed at 37.00 USD. Note: we'll ship this item via SpeedPAK to US, CA and AU, the delivery time is about 3 weeks; For other countries, we'll ship it via registered air mail of China Post, usually the delivery time is about 40 days. If you want express mail service, please contact us for extra postage in advance. Features:Digital Lux Meter possesses the following features:1. Measure current illumination and temperature.2. Measure difference value, max value and min value.3. Switch between illumination and temperature unit.4. The measurement range is (0~200000) lux, auto switch ofmeasurement gear.5. Automatic storage and manual storage of illumination data.6. Setting of automatic power off.7. Backlight and data holding.8. Bluetooth and App. Specifications: Measuring function: illumination and temperature, difference value, max value, min value of illumination. Main parts of photometer head: Photodiode + cosines corrector + correction filter Temperature probe: NTC thermistor Illuminance measuring range: Total measuring range: 0-200,000 Lux, into four ranges X1: 0 – 199.9 Lux X10: 200-1999.9 Lux X100: 2000 – 19999.9 Lux X1000: 20000 – 200000 Lux Illuminance accuracy: +-3%rdg (below 10000 Lux); +-4%rdg (above 10000 Lux) Temperature measuring range: -9.9C – 49.9C Temperature accuracy: +-1C Units of illuminance and temperature, four combinations of units are available Lux/C, Lux/F, FC/C, FC/F. Storage of illumination data: Automatic storage, max numbers of data group is 1000, storage cycle is set by APP Manual storage, max numbers of data group is 67, whether to store data is decided manually Operating temperature/humidity: 0-40C, 10-90% RH Storage temperature/humidity: -10-50C, 10-90% RH LCD screen update: 2 times/s Power source: 3 x 1.5V AAA batteries (Not Included)