The Mengshen MS-M80A is a handheld digital sound level meter (SPL meter) designed to measure environmental noise levels from 30 dB to 130 dB. It features a large LCD with backlight, a sensitive electret condenser microphone, and a 0.5‑second response time. The meter is powered by one 9 V battery (included) and is suitable for use in factories, offices, theaters, audio systems, and home environments.
Large LCD display with backlight for easy reading in low light
Data Hold function: freezes the current reading on the screen
MAX/MIN recording: displays the highest and lowest sound levels measured
Alarm function: alerts when the sound level reaches 130 dB
Power and Auto‑Off
Powered by one 9 V battery (included)
Approximately 50 hours of continuous use
Auto power off: after 15 minutes of inactivity to conserve battery
Specifications
Parameter
Value
Measurement Range
30 dB – 130 dBA
Accuracy
±1.5 dB
Resolution
0.1 dB
Frequency Weighting
A
Frequency Range
31.5 Hz – 8 kHz
Microphone
1/2‑inch electret condenser
Response Time
0.5 second
Display
LCD, 4 digits, with backlight
Auto Power Off
15 minutes
Power Supply
1 × 9 V battery (included)
Battery Life
Approx. 50 hours
Operating Temperature
0 °C to 40 °C (32 °F to 104 °F)
Operating Humidity
10 % – 90 % R.H.
Storage Temperature
-10 °C to 60 °C (14 °F to 140 °F)
Storage Humidity
10 % – 70 % R.H.
Dimensions (L×W×H)
170 × 58 × 35 mm (6.7 × 2.3 × 1.4 in)
Weight
Approx. 107 g (3.8 oz)
Material
ABS (Acrylonitrile Butadiene Styrene)
Use Guide
1. Power Supply
Open the battery compartment on the back of the meter.
Connect a 9 V battery to the snap connector and place it inside the compartment.
Close the compartment securely.
2. Turning On / Off
Press the Power button to turn the meter on. The LCD will light up.
Press and hold the Power button again to turn the meter off.
The meter will automatically power off after 15 minutes of inactivity to save battery.
3. Taking a Measurement
Point the microphone (top of the meter) toward the sound source.
Hold the meter at arm’s length to avoid body reflections affecting the reading.
Read the sound level in dBA on the LCD display.
For outdoor use, attach the supplied wind-resistant ball over the microphone to reduce wind noise.
4. Data Hold
Press the Hold button to freeze the current reading on the display.
Press Hold again to release the hold and resume live measurement.
5. MAX / MIN Recording
Press the MAX/MIN button to cycle through the maximum (MAX) and minimum (MIN) sound levels recorded since the meter was turned on.
The display will show “MAX” or “MIN” accordingly.
Press and hold the MAX/MIN button to clear the stored values and restart recording.
6. Backlight
Press the Backlight button to turn the LCD backlight on or off. The backlight improves readability in dim environments.
7. Alarm Function
When the measured sound level reaches 130 dB, the meter will trigger an audible alarm to warn of potentially hazardous noise.
8. Measurement Tips
Take several readings at the same location to obtain a stable average value.
Avoid blocking the microphone opening with your hand or other objects.
When measuring a specific source, try to minimize background noise from other directions.
Note: If the meter will not be used for an extended period, remove the 9 V battery to prevent leakage. Do not use the meter in high‑temperature or high‑humidity environments.
Product Video
The following video demonstrates the product in use and provides setup guidance.
Package Contents
1 × Digital Sound Level Meter (MS-M80A)
1 × 9 V battery
1 × User Manual (PDF available online)
Safety and Maintenance
Do not disassemble the meter or attempt to repair it yourself.
Keep the meter away from water, dust, and extreme temperatures.
Clean the exterior with a soft, dry cloth. Do not use solvents or abrasive cleaners.
Remove the battery if storing the meter for more than one month.
Warranty
This product is covered by a 1‑year warranty from the date of purchase. For warranty claims or support, please contact the seller (Mengshen) through the Amazon store or refer to the warranty description provided with the product.
