Home / RFS300 PCB Board-Mount Digital Airflow Sensor
Baord mount airflow sensor with reference design circuit.


Board-Mount Digital Airflow Sensor (Reference Design)

The RFS300 is a board-mount air velocity and temperature sensor that uses a reference design circuit for maximum positioning flexibility, thereby creating the smallest possible sensor footprint (6mm x 6mm). The RFS300 is designed to be soldered directly to a printed circuit board or mounted to a surface mount socket for easy removal or maintenance.
Pre-programmed IC.

Sensor element with pre-programmed IC

Drive circuit schematic and placement files supplied by Degree Controls, Inc.
Airflow sensor with dual elements to measure air velocity and temperature.

Dual sensing element with protective shroud

Provides fully linearized air velocity and air temperature with wide operating range.
Small airflow sensor with low power consumption.

Smallest footprint sensor on the market

Less than 20mA power consumption.
Digital UART or I²C Communication
Alarm output option available for switch style operation
5% Accuracy & Repeatability Rating
Available flow learning command for product
optimization, post-soldering

Specs & Details


  • Velocity Range: 0.15m/s – 20.0m/s (30fpm – 4000fpm)

  • Response Time: 400 ms

  • Relative Humidity: (non-condensing) 5-95%

  • Supply Power Requirements:
    +12-24 VDC, 10mA nominal

    (At <18VDC, some low temperature/high flow limitations apply, see Board Mount Sensor manual)

  • Digital Output: 3.3 VDC UART or I²C

  • Optional Alarm Output: Configurable trip point

  • Housing Material: UL94-V0

RFS300 - Board-Mount Digital Airflow Sensor (Reference Design)
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Normal lead-time is 2-3 business days.


Data Sheet
Manual (Board Mount Sensors)

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