Illuminating Meter Bright Test Instrument Brightness Light Meter1. Measuring range: TA631A: 0.1-200000LUX0.01-20000FC; TA631B: 0.1-300000LUX0.01-30000FC2. Ambient temperaturehumidity: 0-60 degrees C, 0-99% RH (TA631B)3. Illuminance display: 6-digit display, up to 9999994. Sensor: digital light probe and filter5. Angle of incidence: 120 degrees6. Spectral range: 400-700nm7. Sampling rate: 8 times second8. Automatic shutdown: 10 minutes (can be manually shut down)9. Operating environment: -10 - 50 degrees Celsius, within 80% relative humidity, indoor altitude less than 2000m10. Storage environment: -10 - 50 degrees Celsius, within 70% relative humidity (remove the battery)11. Power supply: 3 x 1.5V AAA (R03LR06) batteries (not included)12. Display size: approx. 3.7 x 4.1cm13. Size: about 15.2 x 5.5 x 3.3cm14. Weight: approx. 136gFeatures:1. Can set the upper and lower limit alarm threshold, when the measurement is higher or lower than the set threshold, the screen red background light is on for a long time and the measurement value flashes alarm prompt2. Can lock the maximum value, minimum value, average value and real-time value during the measurement3. HD large screen display with white background light4. Automatic shutdown after 10 minutes of no operation (can be manually canceled)5. Light source type can be selected (only TA631B)Packing list:- Host x 1- Cloth bag x 1- Instruction manual x 1- Protective cover x 1