Digital Sound level meter 30~130db large screen display Restaurant Bar Indoor/office/home Wall hanging type noise meter

3. Technical Parameters:

Noise meter can be used as noise engineering, quality control, health prevention and environmental noise monitoring. Such as: factory, school, hospital, shopping malls, hotels do theater laboratory, volume measurement applications on various occasions in the family road trafficaudio.
The measurement accuracy of the product up to +1.5 dB. Compliance with the International Committee of IEC651 TYPE2 and the American National Standards ANSIS 1.4 TYPE2.

Product Features:
Measurement range 30 ~ 130dB (dB)
Accuracy: +1.5 dB (reference sound pressure level, 94dB @ 1kHz)
Dimensions: 210 * 130 * 30MM
Frequency response: 31.5Hz ~ 8.5kHz
frequency weighting: A
Response time: Fast
Alarm switch indicator/Condenser microphone sensor
Microphone: 1/2 inch condenser microphone
Digital Display: 3pcs 3-inch digital tube display three
Power supply: DC 5v 1A micro USB
working environment: 0 - 40 degrees (32 degrees Fahrenheit to 104 degrees Fahrenheit), 10 - 80%RH
Storage of Temp. and humidity: -10~60C. 10~70%RH

Note: This product has no switch function. When you connect USB cable, it will start. When you take out the cable, it will power off.
 

Package content:
1 x MS-525A sound level meter
DC 5v 1A micro USB cable​

Attention:
US/EU USB charger as GIFT !
Please tell us which kind you want, otherwise we will send it in fault.

4. Attached A: The volume Reference

5. Note and Warning:

 

6. USE instructions:

 

1). Measure Noise

Pls press buttom" Button 1"to start up, wait 2 seconds into measuring condition, display the noise levels in display screen.

7. Instrument Alarm

 

 

A. Alarm Switch

Turn on alarm function by defaut when start the meter. Press " Button No.4 " to turn off alarm and the red light off;

Press " Button No.4 " to turn on alarm and the red light on.

 

B. Setting Alarm Value

The default alarm value s 130. Users can adjust it from 50 to 130dB

1) Press button " Button No.4 " for a while into alarm setting, then display alarm value and the red lights blinks

2) Press button " Button No.3,2 " to adjust the alarm value and press button" Button No.3,2 " for a while to set up continuously!

3) Press button " Button No.4 " to save alarm value or press power switch shortly to cancel setting to normal measuring condition

3. Alarm Function (Sound + display)

 

when the measuring value is over the alarm value, the meter will make a sound beeping and lock the data with blinking for 2 minutes.

after 2 minutes ir or press any key, the meter stops alarming and blinking, bt also locks the measure date for 5 seconds.

After 5 seconds, the meter return to normal measurement, Notes: if the measuring value is over the alarm value again when it is back to

Normal measurement, the Sound Level Meter would alarm once again