THÔNG SỐ KỸ THUẬT:
- Measuring range: 30 ~ 130dBA
- Accuracy: ±1.5dB (reference sound pressure level 94dB @ 1kHz)
- Frequency Response: 31.5Hz ~ 8.5kHz
- Frequency Weighting: A (analog of the human ear)
- Digit display: 4-digit resolution 0.1dB take 2 times / sec sampling rate
- Max Hold: MAX Microphone: 1/2 inch condenser microphone
- Power supply: 9V battery (6F22)
- Work environment: 0 ~ 40 °c 10 ~ 80% RH
- Storage environment: -10 ~ 60 °c 10 ~ 70% RH
- Dimensions: 57 X 26 X 149mm