Beacon with version v1.0.5 and shipped after the 10th of August 2017 include a new feature called hibernation.
What does it do?
It allows for the beacon to go into a hibernation mode when not in use.
Thus lowering power consumption and extending battery life.
Simultaneously it will help older Android phones (often Samsung phones) connect better.
It will do so by transmitting signals at maximum speed and power for an interval of ten minutes before going back into hibernation mode.
How does this affect me?
Hibernation is enabled by default.
To wake your beacons from hibernation, dunk them in water for at least three seconds.
Make sure that the sensing pins on the bottom are fully submerged.
Alternatively, you can use a piece of conductive wire to connect the sensing pins for at least three seconds.
If you've never used your beacons before, the activation period is not three but ten seconds.
Quick tip: Always try to use a large enough container of water so the beacon can float horizontally. Submerging your beacon vertically in a glass can cause air bubbles to form around the sensing pins, much like a diving bell. This will isolate them from the water and not sense the submersion.