SMART SENSOR AS834+ Digital Sound Level Meter Digital Noisemeter LCD Sound Level Meter 30-130dB Noise Volume Measuring Instrument Decibel Monitoring Tester

Want to test the sound level? Need to know the noise level? Try our digital sound level meter. It's featured with wide measuring range (30-130dB). It's portable and easy to use as a handy instrument for sound quality control in factory, office, home, school and construction site.

Features:
2.7" large LCD display for easy reading, convenient to use.
Wide measurement range from 30dB to 130dB, Frequency: 31.5Hz - 8KHz, Resolution: 0.1dB, Accuracy: ±1.5dB.
With A and C equivalent weighted sound pressure levels.
Fast and slow dynamic characteristic mode.
AC and DC signal output for frequency analyzer level recorder, FFT analyzer, graphic recorder, etc.
With maximum/minimum value measurement.
90-130dB alarm level setup range, it will hold the maximum value once the measured level is large than the alarm setup level.
Low battery indication, automatic & manual power off function.
Equipped with sponge ball and a storage pouch. Compact and light, convenient to hold and carry.
Portable and easy to use, suitable for checking, monitoring or controlling the sound level for personal, families, business, studies, industrial, etc.

Specifications:
Material: ABS
Accuracy: ±1.5dB (at the calibration point, 94dB@1KHz)
Frequency Response: 31.5Hz~8.5kHz
Dynamic Range: 50dB
Measure Range: 30~130dBA, 35~130dBC
Frequency Weighting: A weighted and C weighting
Digital Display: 4 digit
Resolution: 0.1dB
Sampling Speed: 2 time per second
Analog Bar Graph: One bar is 1dB, sample rate is two times per second
Overload Alert: OVER or UNDER icon to show the stage
AC Signal Output: 0.707V rms at FS, output impedance approx. 600ohm
DC Signal Output: 10mV/dB, output impedance approx. 100ohm
Time Weighting: Fast/Slow
Microphone: 1/2 inch ECM type microphone
Operating Temperature & Humidity: 0～40℃, 10%～80%RH
Storage Temperature: 10～60℃, 10%～70%RH
Power Supply(NOT included): 1 * 9V 6F22 battery or 9V 100mA DC adapter
LCD Size: 52 * 43mm / 2.05 * 2.01in
Item Size: 221 * 66 * 32.5mm / 8.70 * 2.60 * 1.28in
Item Weight: 200g / 7.06oz
Package Weight: 261g / 9.23oz
Package Size: 24.5 * 9.2 * 5.2cm / 9.65 * 3.62 * 2.05in

Package List:
1 * Sound Level Meter
1 * Storage Pouch
1 * User Manual(English)

Note:
When measuring the noise in outdoors, please put a sponge ball on the microphone head to prevent the microphone from being blown directly to cause airflow noise.