To measure noise levels during
  • industrial activity
  • construction activity
  • workplace activity
  • fire crackers usage
  • music systems usage
  • generator sets usage
  • loud speakers /public address systems usage
  • vehicular horns usage
and other mechanical device' usage. 
Designed for measurement of work place noise levels

SD 200

Sound Detector SD-200 is a compact, lightweight sound level meter designed to accurately measure workplace noise levels. Green, yellow and red LEDs flash the color that corresponds to the Optime Alert System, making it easy to select the appropriate level of hearing protection. The SD-200 offers an integrating feature that computes the average sound pressure level, allowing for more accurate assessment of intermittent
sound levels. 

The user-friendly interface makes the SD-200 easy to operate. A rechargeable lithium polymer battery helps lower the total cost of ownership compared to other sound level meters that use replaceable batteries. 

In many work environments, noise levels are highly variable, making it difficult to accurately measure sound levels. The SD-200 helps solve this problem by providing the average sound pressure level. This advanced functionality is easy to use and delivers a steadier reading in environments such as manufacturing facilities or machine shops where noise levels are often highly variable

  • Integrated Sound Level Meter which gives Leq or Lavg
  • Rechargeable Lithium polymer (1000mAh) battery which gives runtime more than 50 hours with low battery Indication.
  • USB cable provided to charge the instrument with the computer.
  • The user selectable LED Alert screen provides a quick visual reference of sound levels with green, yellow and/or red LEDs that flash when preset noise levels have been reached.
  • Meets ANSI S1.41983(R 2006), ANSI S1.43 1997 (R 2007), IEC 61672-1 (2002) IEC61010-1 (2010), EC standards.
  • Displays all required measurements like Sound Pressure Level (SPL), Average value (LEQ /LAVG), LED Alert (with Hearing Protection icon), Maximum value (MAX), Minimum value (MIN), Run-Time, Overload (OL), and  Under-Range (UR).

SE 400

The Sound Examiner SE-400 series of sound meters are engineered to accurately measure noise levels in highly variable environments. These easy-to-use instruments calculate the average sound pressure level (LEQ/LAVG) over the run time; data log the maximum, minimum and peak values, and enable data to be downloaded for further analysis.

  • Intuitive User Interface
  • Optional Removable Preamp Microphone
  • Large Backlit Display
  • Remote Printing Capabilities
  • Data Logging
  • Rugged design Water resistant and dust-proof designs (IP65 rated) with an ergonomic soft grip.
  • Rechargeable Lithium Polymer (2500 mAHr), runs 18 hours minimum (excluding the backlight).
  • Remote monitoring capability with removable preamp up to 15 meters.
  • Stores data up to 2MB.
  • Detection Management Software (DMS) to interpret data files.
  • Optional printing capability for local noise ordinances and enforcement.
Click here for SE 400 brochure.


Portable rechargeable battery-operated thermal printer with belt clip, AC adapter/charger, printer cable, roll of paper. For use with SE-401 and SE-402 Sound Level Meters.


  • Basic Integrated Sound Level Meter having facility to measure Leq
  • The complete kit consists of SLM, Portbale Printer, Calibrator and Carrying Case
  • Ideal system to meet CPCB Noise Act 2000 and Ordinanace Enforcement
click here for more info about Patrolling Sound level Meter