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Transmitters with inputs for air velocity

Sensors are not included and must be ordered separately.
GS41AV The GS41AV transmitter is designed for use with the E plus E series of air velocity sensors, types EE66 or EE576 (see 'Sensors / Accessories' tab). Highly accurate readings can be achieved down to 0m/s. The combination has proved ideal where air laminar flow in ducted heating / ventilation systems in domestic or industrial installations needs to be monitored.

The value logged is the rolling averaged value over a three minute cycle, meaning that transient values or deviations from the norm are not lost when logging.


EE576 The E plus E EE576 sensor head uses a field proven hot-film element to measure velocity by detecting the change in temperature as air moves past it, cooling the element. This technique means the sensor is less sensitive to dust and dirt, giving very stable results.
An alignment strip along the probe’s tube allows the user to set a measured probe depth during mounting in a pipe or duct. This provides a method for repeatedly mounting probes to an accurate known depth.
EE576 Air Velocity Probe


Common Specification

RF specification: EN300-220
RF power: 10mW
Environment specification  
  Compliant to EN300-220: -10 to +55°C
  Actual: -30 to +65°C
  Humidity: 100% non condensing
Environmental rating: IP40
Dimensions (footprint): 78 x 41mm
Battery endurance: up to 5 years (interval set to 5 minutes) (less for GL-70 and GS40 series)
Transmission interval range: 1 sec to 4 hours
Indicator (red LED): transmit active/on/off
Control switch (concealed): test mode / hibernate
Antenna socket: SMA

Transmitter Specification

Model(s) Sensors
GS41AV 1 x averaged value. A rolling average from 18 samples taken at fixed 10 second intervals.
1 x calculated minimum value of the 18 samples
1 x calculated maximum value of the 18 samples
1 x instantaneous value (last value measured)

Common to all transmitters
Gen II Quick Start Instructions

Specific to this family of transmitters
GS41AV - Air_Velocity Leaflet