1. Measurement range: 30dB – 130dB
2. Measurement range: 30dB – 70dB, 60dB – 90dB, 80dB – 110dB, 100dB – 130dB
3. Accuracy: about 1.5dB (based on standard sound source, 94dB@1KHz)
4. Resolution: 0.1dB
5. Frequency weighting: TA652A: A/C; TA652B: A/C/Z
6. Frequency response: 31.5Hz – 8.5KHz
7. Sampling rate: 2 times / second
8. Analog bar: 1 scale represents 1dB
9. Noise display: 4 digits, up to 1999
10. Microphone: high sensitivity 1/2 inch condenser microphone
11. Automatic shutdown: 15min (can be manually shut down)
12. Operating environment: -10 – 50 degrees Celsius, within 80% relative humidity, indoor altitude less than 2000m
13. Storage environment: -10 – 50 degrees Celsius, within 70% relative humidity (remove the battery)
14. Power supply: 3 x 1.5V AA (LR06) batteries (not included) / USB Micro interface 5V
15. Display size: approx. 5.3 x 4.4cm
16. Dimensions: about 22.9 x 7 x 3.5cm