The SV 104 is our latest and smallest ever noise dosimeter. It has incredible functionality, taking full noise dosimeter capabilities into a compact style instrument that beats anything else on the market hands down!
Any instrument is only as strong as its weakest point and on a noise dosimeter that’s  normally  the  microphone.  On  the  SV 104  we’ve  removed  that  ‘Achilles heel‘  by  using  a  revolutionary and virtually  indestructible MEMS microphone.  Add to that an inbuilt tri-axial accelerometer for vibration shock detection and
the SV 104 is firmly placed as both the most technically advanced and the most robust personal dosimeter out there. The SV 104 also uses a class beating high resolution, colour OLED screen which makes taking noise measurement a real pleasure.
Never before has a noise dosimeter been so accomplished yet affordable, making your measurements more accurate and reliable than ever before.


  • Small, compact style dosimeter
  • Easy and friendly user interface
  • Shock resistant MEMS microphone
  • Built-in tri-axial accelerometer for vibration shock (knocking) detection
  • High contrast color OLED display
  • Single measurement range
  • Option for octave real-time analysis
  • Option for audio events recording
  • Voice tagging
  • Automatic calibration start
  • Three virtual measurement profiles
  • Operational time > 40 hours
  • USB 2.0 interface
  • Rechargeable battery
SV104 Technical specifications
Standards IEC 61252; ANSI S1.25-1991;
Measurement results Lavg/Leq, SPL, Max, Min, SEL, SEL8, PSEL, LEPd, Dose (%), TWA, E, E_8h, Peak, Run Time, Upper Limit Time (ULT), L(C-A), Projected Dose (D_8h)
Weighting filters A, C , Z,
Time Constants Slow, Fast, Impulse
Exchange Rate 2, 3, 4, 5, 6
Microphone Class 2 microphone, 1/2″ housing
Measurement Range 55 dBA RMS ÷ 140.1 dBA Peak
Frequency Range 30 Hz ÷ 8 kHz
1/1 Octave Analysis Real-time analysis in octave band filters
9 filters with centre frequencies from 31.5 Hz to 8 kHz (option)
Memory 8 GB
Display Colour 128 x 64 pixels OLED type
Keyboard 3 push buttons
Communication interfaces USB 2.0 client
Power Supply Ni-MH rechargeable cells            operation time > 40 hours*
USB interface                              500 mA HUB
Environmental Conditions
Temperature from -10oC to 50oC
Humidity up to 95 % RH, non-condensed
Physical Characteristics Dimensions    88 mm x 49.5x 19.2 mm
Weight Approx. 100 grams
*with display off

 User manual: SV104