1. Display: 30x30mm, four-numbers display, maximum 1999 2. Frequency weighting: A weighting 3. Measuring range: 30 to 130dB 4. Accuracy: +/-1.5dB (at reference sound pressure level, 94dB 1KHz) 5. Resolution: 0.1dB 6. Microphone: High-sensitivity 1/2-inch condenser microphone 7. Frequency response: 31.5Hz-8KHz 8. Time weighting: fast 0.125 seconds, slow 1 second 9. Sampling rate: 2 times per second 10. Data display: data hold, maximum value, minimum value, backlight, low battery prompt 11. Automatic shutdown: 15 minutes of no operation 12. Working environment: -10 to 50 degrees Celsius, no more than 80% relative humidity, indoor altitude less than 2000m 13. Storage environment: -10 to 50 degrees Celsius, no more than 70% relative humidity 14. Power supply: 3 x 1.5V AAA batteries (not included) 15. Dimensions: 160x56x28mm 16. Net weight: about 114g
