Flymaster GPS LS User Manual page 18

10.3 Advanced settings
ALT 1 - GPS - The Get from GPS can also be set to Auto, with this value
being stored in the settings. When Auto is selected, after being turned On,
the GPS LS will automatically set the altimeter to the GPS altitude (once
the a valid GPS signal exists), or whenever the pdop value is lower than
the previous one.
LOG - Shows the recorded flights into the GPS LS internal memory.
FACT- Restore al the values to factory defaults.