Digital Light Meter Illuminance Lux Meter Backlight LCD Display 0.1-200000LUX0.01-20000FC Light Sensor Tester 1. Measuring range: 0.1-200000LUX0.01-20000FC 2. Measuring steps: 20020002000020000OLUX, 20200200020000FC 3. Illumination display: 4-digit display, up to 1999 4. Sensor: silicon photodiode with a light filter 5. Angle of incidence: 120 degrees 6. Spectral range: 400-700nm 7. Sampling rate: 2 timessecond 8. Automatic shutdown: 15 minutes (can be turned off manually) 9. Operating environment: -10 - 50 degrees Celsius, relative humidity within 80%, indoor altitude less than 2000m 10. Storage environment: -10 - 50 degrees Celsius, within 70% relative humidity (remove the battery) 11. Power supply: 2 x 1.5V AAA (R03LR03) batteries (not included) 12. Display size: about 3.4 x 3.1cm 13. Dimensions: About 16.8 x 5.9 x 3.4cm 14. Weight: about 150g Features: 1. High-precision probe with digital photodiode, filter lens, 120-degree angle of incidence 2. LUX FC two units switching 3. Large HD display with white background lighting 4. 15 minutes without operation after the automatic shutdown (can be canceled manually) 5. Maximum minimum value can be viewed Packing list: - Main unit x 1 - Cloth bag x 1 - Instruction manual x 1 - Protective cover x 1