Stethophon® 04 SDR

Stethophon® 04 SDR – Complete Wireless Set

The Stethophon® 04 SDR Complete Wireless Set is a professional-grade acoustic leak detection system engineered for fast, accurate leak pinpointing in water, plumbing, and mechanical systems. Designed for demanding field conditions, it captures and amplifies structure-borne sound with exceptional clarity — even when leaks are barely audible.

This fully wireless SDR (Sewerin Digital Radio) system eliminates cables entirely, giving technicians unrestricted movement and clean, interference-free audio. The digital radio connection provides sound quality equal to or better than wired systems, without hiss, re-amplification, or signal loss.

With eight selectable filter levels, the Stethophon 04 SDR allows operators to isolate leak frequencies across different pipe materials — from deep, low-frequency sounds in plastic lines to higher-frequency signals in metallic pipes. A built-in hearing protection function automatically suppresses sudden loud noises to protect the operator during extended use.

To support confident decision-making, the unit displays numerical sound levels, allowing objective comparison between inspection points and faster confirmation of leak locations.

Compact, lightweight, and built in Germany, the Stethophon® 04 SDR is an ideal solution for leak pre-location, verification, and mechanical inspection work.

Applications

• Water leak detection in plumbing and heating systems

• Pre-location of leaks in water networks

• Examination of house service lines

• Compressed air system leak detection

• Mechanical and bearing inspection

What’s Included – Complete Wireless Set

• Stethophon® 04 SDR sound detector

• Wireless digital headphones (SDR)

• External ground microphone

• Probe tip

• Chargers

• Transport bag

Please Note: Sewerin Products are field-tested for performance before they leave the facility. Due to this hands-on process, shipping may take longer than standard timelines.

This product is covered by manufacturer warranty through Hermann Sewerin GmbH, subject to proper use per the operating instructions and compliance with Sewerin’s General Terms and Conditions. Warranty coverage is valid when repairs and maintenance are performed by authorized technicians using approved parts. For full warranty terms, please contact LeakGear or your Sewerin authorized service center.