TRSI TA636B Integrated Digital Lux Meter Light Brightness Measuring Support BT 1. Display: 30x30mm, four-number display, maximum 1999 2. Measuring range: 0.1 to 200000LUX (0.01-20000FC) 3. Measuring range: 200200020000200000LUX (20200200020000FC) 4. Accuracy: +-(4%+10dgts), calibrated with standard flat light with color temperature 2856K 5. Resolution: LUX less than 200:0.1; LUX greater than or equal to 200:1 6. Sensor: Silicon photodiode with filter lens 7. Sampling rate: 2 times per second 8. Incident angle: 120 degrees 9. Repeatability: +-2% 10. Spectral range: 400 to 700nm 11. Automatic shutdown: 15 minutes without operation 12. Working environment: -10 to 50 degrees Celsius, no more than 80% relative humidity, indoor altitude less than 2000m 13. Storage temperature: -10 to 50 degrees Celsius, no more than 70% relative humidity 14. Power supply: 2 x 1.5V AAA batteries (not included) 15. Dimensions: 150x56x28mm 16. Net weight: about 150g 17. Connect to mobile phone via Bluetooth to record data, effective distance 10m