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FLS122 Air Velocity Sensor

Designed for thermal management and filter monitoring applications. Easy to integrate into even the most space-constrained designs.

Order your evaluation kit today

Get accurate real-time airspeed and temperature measurements for your most space-constrained designs. Maximise product performance and energy efficiency. No flow fixture needed, for easy and low-cost integration into an existing duct. Get your products to market faster with FLS122: the world's smallest air velocity sensor.


  • Silicon-MEMS thermal air velocity sensor
  • Small footprint: 3.5 mm x 3.5 mm.
  • Air speed range: up to 20 m/s.
  • Span accuracy: +/- 5% measured value.
  • Fully temperature-compensated readings.
  • Configurable operating modes and features.


  • Solid-state sensor.
  • Ultra-low power.
  • High precision.
  • Easy integration into existing flow paths.
  • Fully compatible with SMD assembly processes.


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Flusso FLS122 product sample air velocity sensor

Why not try the FLS122?

Our evaluation kit, which combines an FLS122 velocity sensing module with plug and play hardware and a PC GUI, allows users to easily connect everything together with their laptop to assess the sensor’s performance.

Get the evaluation kit

Flusso offers a complete digital flow sensing solution: to seamlessly integrate hardware and software with mechanical and fluidic components.

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