Home > Product library > Telemetry > Transmitters > CO2, RH and temperature (air quality)

Transmitters with inputs for CO2, RH and temperature (air quality)

The GD47 transmitter is a self contained air quality monitoring transmitter.

  • Built in digital RH, temperature and CO2 (0-5000ppm) sensors.
  • Calibration values are stored in the transmitter and the CO2 sensor includes a daily auto calibration feature.
  • Supplied with AC power supply and built in rechargeable standby batteries (to sustain operation for up to 100 hours). Availability of the external supply is continuously monitored and can be presented as a channel of data. This means an AC power failure can be investigated or alarmed before the internal batteries become discharged.
  • Functionally identical to the GD47.
  • Wall mounting only.
  • Compact and discreet white enclosure.



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 Range Resolution Accuracy
GD47 / GW47 1 x built-in RH and temperature
1 x built-in CO2
1 x built-in 12VDC supply monitor
as GD10



Common to all transmitters
Gen II Quick Start Instructions

Specific to this family of transmitters
GD47 Leaflet
GW47 Leaflet

User Instructions
User Instructions For GW47