1. Measurement range: 30dB - 130dB
2. Ambient temperature/humidity: 0-60 degrees C, 0-99% RH (TA651B)
3. Accuracy: 1.5dB or so (based on standard sound source, 94dB@1KHz)
4. Resolution: 0.1dB
5. Time weighting: FAST 0.125s, SLOW 1s
6. Frequency response: 125Hz - 8KHz
7. Sampling rate: 2 times / second
8. Analog bar: 1 scale represents 2dB
9. Noise display: 4 digits, up to 1999
10. Microphone: high sensitivity 1/2 inch condenser microphone
11. Automatic shutdown: 10min (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 (R03/LR06) batteries (not included)
15. Display size: approx. 3.7 x 4.1cm
16. Size: about 14.5 x 5.5 x 3.3cm
17. Weight: approx. 115g

Features:
1. Highly sensitive 1/2 inch condenser microphone with high accuracy, high sensitivity and instantaneous response
2. Can set the upper and lower alarm thresholds, when the measurement is higher or lower than the set threshold, the screen red background light on and the measurement value flashing alarm prompt
3. HD large screen display with white background light
4. Automatic shutdown after 10 minutes of no operation (can be manually canceled)
5. Large range range

Packing list:
- Host x 1
- Cloth bag x 1
- Instruction manual x 1