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The Stethophon 04 from Sewerin is designed to be a fully-featured compact leak detector featuring a built-in contact microphone providing undistorted sound reproduction, even when the noise is barely audible. The Stethophon 04 can be equipped with either wired headphones or with Sewerin SDR wireless headphones. When using the Sewer SDR headphones, the unit will automatically connect to headphones when unit and the wireless headphones are switched on. Sewerin SDR wireless digital signal processing technology prevents acoustical interference, e.g., hissing, re-amplifying, etc. Every Stethophon 04 feature user selectable audible filter functions, enabling users to listen to the sound frequency of the leak noise while filtering nuisance noises.

Stethophon 04 kits can be purchased as BASIC, STANDARD or COMPLETE with either WIRED or WIRELESS SDR headphones.

Compact Water Leak Detector


  • SDR Wireless headphones (certain models)
  • External ground microphone (certain models)
  • Numerical display of minimum noise level (0-1000)
  • 8 filter levels
  • Hearing protection function
  • Minimum operating time 8 hours
  • Lightweight packaging
  • Compact design
  • Hard carry case

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Stethophon 04 Leak Detector