Shenzhen Sanpo Instrument Co., Ltd.
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Sanpo - Model SL4200 -Sound Level Meter
Frequency range:125Hz to 8KHz. Measuring range:35-130dB. Frequency Weighting:A/C. Microphone:1/2 inch electret condenser. Display:3 1/2 digits LCD display. Resolution:0.5dB. Sampling time:0.5 second. Time Weighting:FAST 125ms. SLOW 1 second .
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- Measuring ranges:
- Range 1:（30）32dB to 70 dB
- Range 2:60dB to 100 dB
- Range 3:90dB to 130 dB
- Accuracy:±2dB(94dB@1kHz)
- Dynamic range:30dB
- MAX hold: "MAX"
- Power supply: one 9V battery (model 6F22)
- Operating environment:
- Temperature: 0-40℃（32-104°F）
- Relative humidity: ≤90%RH