Illuminating Meter Bright Test Instrument Brightness Light Meter 1. Measuring range: TA631A: 0.1-200000LUX0.01-20000FC; TA631B: 0.1-300000LUX0.01-30000FC 2. Ambient temperaturehumidity: 0-60 degrees C, 0-99% RH (TA631B) 3. Illuminance display: 6-digit display, up to 999999 4. Sensor: digital light probe and filter 5. Angle of incidence: 120 degrees 6. Spectral range: 400-700nm 7. Sampling rate: 8 times second 8. Automatic shutdown: 10 minutes (can be manually shut down) 9. Operating environment: -10 - 50 degrees Celsius, within 80% relative humidity, indoor altitude less than 2000m 10. 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 4.1cm 13. Size: about 15.2 x 5.5 x 3.3cm 14. Weight: approx. 136g Features: 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 prompt 2. Can lock the maximum value, minimum value, average value and real-time value during the measurement 3. HD large screen display with white background light 4. 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