Overview
Atmotube PRO 2 features an embedded GPS module that enables precise location tracking for air quality measurements.
The device can also use your phone’s GPS as an alternative source for location data.
GPS Module Modes
Mode | Description | Power Consumption |
Always On | The GPS is constantly active, providing continuous location updates. | ~20 mA |
Timer | GPS activates when motion is detected and turns off after 10 minutes of inactivity (default). | Power-optimized |
Always Off | GPS remains disabled to save battery. | — |
Using Phone GPS Instead of Built-In GPS
You can choose to use your smartphone’s GPS when connected to the app. Two modes are available:
Mode | Update Interval | Description |
Battery Saving | 10 to 60 seconds | Low-power mode with less frequent updates. |
High Accuracy | 1 to 5 seconds | Prioritizes accuracy, ideal for mapping or outdoor measurements. |
How to Start GPS Operation (Cold Start)
To initialize GPS and begin receiving satellite data:
Set GPS mode to Always On or Timer in the app settings.
Move outdoors to an open area with a clear view of the sky.
Place Atmotube PRO 2 on a flat surface with the PRO 2 logo facing up.
Open the GPS settings screen in the app to monitor satellite status.
Wait for the first satellite fix - this initial cold start typically takes 2–5 minutes.
If you do not see any GPS updates after one minute, please try rebooting the device (press and hold the button for about 8 seconds).
Tips
Keep the device still during the first fix.
Avoid metal surfaces or enclosed spaces that block satellite signals.
After the first fix, subsequent GPS startups will lock faster (“warm start”).
Improved GPS Tracking with A-GPS Support
Atmotube PRO 2 supports A-GPS, which helps speed up satellite acquisition by using pre-loaded orbital data.
This feature is available from 3.1.0 Atmotube PRO 2 firmware version with the latest mobile apps.
This significantly improves the overall GPS experience:
faster satellite acquisition,
more stable GPS operation,
improved coordinate accuracy,
fewer lost GPS fixes,
better performance indoors, near buildings, or in difficult signal conditions.
A-GPS files are updated automatically approximately once per week when:
the Atmotube is connected to the mobile app,
the phone has internet access,
and GPS is enabled on the device.
No manual action is required. Still, you can check the status of A-GPS in App -> Settings -> GPS.