SMART SENSOR AS804 Digital LCD Decibel Sound Level Meter Tester Audio Noise Measurement Detectors Logger for Indoor/ Outdoor Uses Sound Pressure Level 30 to 130dBA

Specifications:
- Measuring Range: 30 to 130dBA - Accuracy: ±1.5dB
- Frequency Range: 31.5HZ-8.5KHZ
- Digit & Resolution: 4 digits & 0.1dB
- Microphone: 1/2 Inch Electret Condenser Microphone
- Auto Power Shut Off/ Low Battery Indication
- Max Min Hold Function/Backlight display
- Sampling Frequency: 2 times/sec
Warm Prompt :
1. Please don't use the meter under a high temperature and humid environment.
2. Please take out the batteries when not in use for a long time to avoid electrolyte leakage and damaging the meter.
3. When measuring the noise outside, please mount the wind-resistant ball on the head of the microphone from being directly blown by wind and measuring other noise.