4 Feb 21, 2024
Downloading Data
By clicking “Tracker data”, the user is brought to a page which gives data download
options. A date range can be chosen to only retrieve data within a specific time period,
or all data from the tracker can be fetched. GPS data points may be retrieved in
hhmmss format, or decimal.
Viewing Recent Transmissions
The final view that may be selected shows the recent LTE sessions and some statistics
about the tracker at each event. The data shown is as follows:
• Date/time
• Number of GPS fixes sent by tracker
• Firmware version
• Battery voltage
Section 4 Interacting with the Tracker
The L20 is sealed with water/splash-proofing material, and the only physical user
interaction is with an onboard magnetic switch.
Forcing the L20 to enter sleep mode
A magnet may be attached to the L20 over its switch to place it in an ultra-low-power
sleep mode. This area is marked with two dots on the tracker. Magnets that are weaker
than the one shipped with the L20 may not activate the switch, so only use the provided
magnet.
In sleep mode, the L20’s data collection schedule will be paused until the magnet is
removed.
After attaching the magnet, the L20’s LED will blink to confirm that it has gone to sleep.
Check table 1 for LED blink patterns. Normally, confirmation will take a few seconds, but
may take up to 3 minutes if the L20 is attempting a GPS fix or connecting to LTE.
Taking the L20 out of sleep mode
Removing the magnet from the tracker will take the L20 out of sleep. The onboard LED
will blink to confirm this. Check Table 1 for a reference on LED blink patterns. On
wakeup, the L20 will always attempt to connect to LTE to upload data and update
settings (provided the battery is charged enough to attempt a transmission).
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