// Noise Dosimeters


The SV  104A is a personal noise dosimeter with a Bluetooth® communication supported by the Smartphone application called Assistant. For measurements of noise at work in accordance to ISO 9612 as well as OSHA, MSHA and ACGIH. The dosimeter has a very robust MEMS microphone that has a lifetime warranty. We have designed the SV  104A to make noise dosimetry measurements easier. Firstly, the voice comment feature replaces necessity of identifying the dosimeter with a different type of stickers. Secondly, a single large measurement range of 53 dB to 141 dB enables measurement in all kinds of working environment. But mostly, the auto-calibration is what makes the SV  104A easy in use.


  • Shock resistant MEMS microphone with a life-time warranty
  • Bluetooth® communication and application for Android platforms
  • Personal Noise Dosimeter conforming to IEC 61252, ANSI S1.25 and Class 2 IEC 61672
  • Single measurement range 53 dBA RMS ÷ 141 dBA Peak
  • L(C-A) calculation
  • Automatic calibration start (auto-calibration)
  • Built-in tri-axial accelerometer for vibration shock (knocking) detection
  • High contrast color OLED display
  • Option for octave real-time analysis
  • Option for audio events recording (wave format)
  • Voice tagging
  • Three virtual measurement profiles
  • Measurement of Laeq and Lcpeak in one profile
  • Operational time > 48 hours
  • Rechargeable battery
  • Extremely compact, lightweight and robust case