Hummbox Dry contact is a connected dry contact sensor for level monitoring, building management (presence, opening detection) or smart industry (machine state detection and alarms).

Sensor dry contact

  • Dry contact
  • Transmission on event


  • LPWAN: Sigfox or Lora
  • External antenna

User interaction

  • Button for on-site configuration and instant measurement
  • Audio feedback for interactions

Box and mounting

  • Waterproof box IP65
  • Easy mounting with screws or clamp
  • Size: 115 x 65 x 55 mm
  • Weight: 200g

Autonomy and measurement frequency

Measurement frequency can be managed over the cloud from once a day to 144 times per day (every 10 minutes)

Battery AA

  • 5 years for 2 measures per day
  • 2 years for 12 measures per day

Battery C (option)

  • 12 years for 2 measures per day
  • 7 years for 12 measures per day

Smart frequency mode increases battery life time adapting the frequency to the dynamic of the physical paramater monitored.

For example, in standard case, the autonomy can be increased from 2 years to 4.5 years.


  • Battery C for autonomy extension

Use cases

  • Logistic and level Monitoring
  • Building management (presence, opening detection)
  • Smart industry (machine state detection and alarms)

Desktop & mobile web App

Learn more about App





Learn more