SmartEAR® Noise Logger

SmartEAR® Noise Logger

HL 7000 Ground Microphone
HL 7000 Ground Microphone
HL 7000 Ground Microphone

One of the most powerful NB-IoT noise loggers in its class!

The smart noise logger detects even the smallest changes in the pipe network and makes leaks audible before they become real problems. Automated, precise and reliable, the system records acoustic signals around the clock and sends the data directly to a central platform. Water leaks are thus detected at an early stage without the need for time-consuming manual inspections.

Special features

  • • Pre-installed nano SIM card
  • • Audio files up to 10 seconds long
  • • Battery operation up to 9 years
  • • IP 68 (even after battery change)
  • • Anti-theft device
  • • 360° magnetic retaining ring (optional)

The installation is very simple

SmartEAR is placed at strategic points in the network and starts monitoring immediately. An intuitive POSEYEDON user interface provides you with all the relevant information directly - available at any time and from anywhere. This not only saves valuable time, but also significantly reduces the personnel required for regular checks.


  • • Height: 112 mm (118 mm with magnet)
  • • Diameter: 60 mm (78 max.)
  • • Weight: 450 g (with antenna)
  • • IP 68 Certified

Latest technology

The use of LTE-M / NB-IoT technology ensures secure, fast and reliable data transmission. In addition to these basic advantages, this technology offers additional benefits and secure data transmission.


  • • Extended coverage
  • • Energy efficiency
  • • Cost efficiency
  • • Scalability