ET-933 Digital Sound Level Meter Noise Tester Sound Detector Decible Monitor 30-130dB Audio Measuring Instrument

This Sound Level Meter is designed to meet the measurement requirements of safety Engineers, Health, Industrial safety offices and sound quality control in various environments like factory, school, construction, etc.



Precision Noise Meter: Accurate Sound Measuring Instrument

If you’re interested in monitoring sound levels in your environment, a decibel meter sound detector is an essential tool. also known as a sound measuring instrument, this device helps you measure the intensity of sound and ensures that you’re not exposing yourself to potentially harmful noise levels.

Characteristics Of The Sound Measuring Instrument Product

Our decibel meter sound detector is designed to meet the measurement requirements of safety engineers, health professionals, and industrial safety offices, it is also suitable for sound quality control in various environments such as factories, schools, and construction sites. The following are some of the key features and characteristics of our decibel meter sound detector:

  • Max/min/data hold function
  • Over range indication
  • Under range indication
  • A & C weighting
  • Fast & slow response settings
  • Enable/disable the auto power-off function
  • 1/2 inch electret condenser microphone
  • Automatic shut down after approximately 15 minutes of inactivity

Applied standard

IEC61672-1 CLASS2

Frequency range


Dynamic range


Measuring level range

Lo:30dB~80dB Med:50dB~100dB
Hi:80dB~130dB Auto:30dB~130dB



Time weighting

FAST 125ms;SLOW ( 1s )


1/2 inch electret condenser microphone


3½ digits LCD display with a resolution of 0.1dB

Frequency weighting

A & C

Data update

2 times/sec

Alarm function

When the input exceeds the upper limit of the range, the alarm function will display “OVER”. When the input is below the lower limit of the range, the alarm function displays “UNDER”

Auto power off

The meter will automatically turn off after approximately 15 minutes of inactivity, but it is possible to disable this auto power off feature.

Power supply

The power supply is a 9V battery, which can use 006P, IEC 6F22 or NEDA 1604.

Battery life

at least 30 hours

Operating conditions


Storage conditions






As a potential user of a decibel meter sound detector, you might have some questions about the product and its functionality. here are a few frequently asked questions about our sound measuring instrument:

Q: Is the sound decibel meter easy to use?
A: Yes, our sound decibel meter is designed for user-friendly operation. It comes with a clear display and intuitive controls, making it easy for anyone to use.

Q: Can the meter be used for outdoor measurements?
A: Yes, our sound level meter is suitable for use in both indoor and outdoor environments. It is designed to provide accurate readings in various settings.

Q: How accurate are the measurements provided by the sound measuring instrument?
A: Our sound meter complies with the IEC61672-1 CLASS2 Standard, ensuring the accuracy of the measurements it provides. It is a reliable tool for sound level assessment.

Introduction To Application Scenarios
Our decibel meter sound detector can be used in a wide range of application scenarios, thanks to its versatility and reliability. Here are a few examples of how our sound measuring instrument can be utilized:
1. workplace safety: use the decibel meter in industrial environments to monitor noise levels and ensure that workers are not exposed to hazardous sound levels.
2. school and classroom environments: measure the sound levels in classrooms to ensure a healthy learning environment for students and teachers.
3. construction sites: monitor noise levels on construction sites to protect workers from excessive loudness and comply with noise regulations.

In conclusion, our sound measuring instrument is designed to meet the highest standards of accuracy and reliability, making it the ideal choice for professionals and individuals alike.

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