SMART SENSOR AS834+ AS844+ Digital LCD Sound Level Meter Noisemeter 30-130dB 

Noise Volume Decibel Monitoring Tester Instrument

SMART SENSOR Model:AS834+

Features:

1. 2.7" large LCD colour display for easy reading, convenient to use.

2. Wide measurement range from 30dB to 130dB, 35-130dBC,Frequency: 31.5Hz - 8KHz, 3. Resolution: 0.1dB, Accuracy: ±1.5dB.

4. A and C equivalent weighted sound pressure levels.

5. Fast and slow dynamic characteristic mode.

6. AC and DC signal output for frequency analyzer level recorder, FFT analyzer, graphic recorder, etc.

7. Maximum/minimum value measurement.

8. 90-130dB alarm level setup range, it will hold the maximum value once the measured level is large than the alarm setup level.

9. Low battery indication, automatic & manual power off function.

10. Equipped with sponge ball and a storage pouch. Compact and light, convenient to hold and carry.

11. Portable and easy to use, suitable for checking, monitoring or controlling the sound level for personal, families, business, studies, industrial, etc.

Specifications：

      Brand name

    Smart Sensor

    Color

    Yellow

        Model number

    AS834+

    Accuracy

   ±1.5dB

        Frequency range

    31.5Hz-8.5KHz

    Dynamic range

    50dB

        Measure range

    30-130dBA,35-130dBC

    Frequency weighting

    A and C weighting

        Digital display

    4 digit

    Resolution

    0.1dB

        Sampling speed

    2 times/second

    Analog Bar Graph

    One bar is 1 dB

        AC signal output

    0.707V rms at FS

    DC signal output

    10mV/dB

        Time weighting

    Fast/Slow

    Power supply

    9V battery(not included)

        Operation temperature

    0°C-40°C(10%-80%RH)

    Storage temperature

    -10°C-60°C(10%-70%RH)

SMART SENSOR Model:AS844+

Features:

 1. Data storage function allows to store up to 15,000 groups of data.Connect with the computer through USB cable, which supports data record           download, real-time sampling analysis, and graph & data printing.

 2. Real time display the current temperature(℃/℉ switchable) and humidity.

 3. 2.7" large LCD display for easy reading, convenient to use.

 4. Wide measurement range from 30dB to 130dB, Frequency: 31.5Hz - 8KHz, 5. Resolution: 0.1dB, Accuracy: ±1.5dB.

 5. With A and C equivalent weighted sound pressure levels.

 6. Fast and slow dynamic characteristic mode.

 7. Both AC and PWM signal output are available.

 8. Low battery indication, automatic & manual power off function.

 9. Equipped with sponge ball and a sturdy storage case. Compact and light,convenient to hold and carry.

 10. Portable and easy to use, suitable for checking, monitoring or controlling the sound level for personal, families, business, studies, industrial,            etc.

Specifications：

      Brand name

   Smart Sensor

   Color

   Yellow and black

       Model number

   AS844+

   Calibration sound source

   94dB@1KHz

       Measurement range

   30-130dBA/35-130dBC

   Accuracy

   ±1.5dB

       Resolution

   0.1dB

   Dynamic range

   50dB/100dB

       Overload indication

   OVER/UNDER

   Frequency weighting characteristic

   A and C

       Digital display

   31/2 digits

   Analogy bar graph

   1dB/1 bar graph

       Sampling rate

   20times/second

   AC signal out

   1 Vrms/full bar grph

       Dynamic characteristic

   FAST/SLOW

   Data storage quantity

   15000

       The maximum value holding

   MAX

   Auto power off

   (after o operation for 10 minutes)

       Microphone

   1/2inch polarization capacitance

   Operation volyage

   3.7V Lithium battery/USDB 5V

       Battery life

   12hr(continue use)

   Temperature measure range

   0-45°C

       Temperature Accuracy

   ±2°C

   Humidity measure range

   10-99%RH

       Humidity Accuracy

   ±5%RH

   Item size

   225*66*31cm