Gas CMV – SigFox


The outdoor Gas VMC sensor measures the vacuum established by outdoor ventilation chambers. The sensor regularly transmits its data over the ultra narrow band, long range, low power, secure SigFox™ radio network. It also detects the on/off position of equipment.


  • SigFox™ technology
  • Easy to install and use
  • Autonomy > 8 years
  • Measurements in the VMC air flow:
    – Depression: 0 to + 500 Pa; -/+ 10 Pa
    – Temperature: 0°C to 50°C; -/+ 1°C  IP65
  • Optional input for mechanical depressostat


  • Supervision of gas and sanitary ventilation systems.
  • Energy optimisation in buildings (residential, tertiary).

Suggestion of other products in the SigFox range

WATTECO, your IoT partner

Over 30 years of experience

in the design, development, industrialisation and manufacturing of electronic products

In-house engineering and design department

for the development of new concepts in accordance with your constraints

Made in France

our production workshop is based in Hennebont (56), France, and we are an ISO 9001 certified company