From firmware version 0.87, released 1st of June 2019, the FLASH button can be held down for 7 seconds to restore factory default configuration.

This is useful if you e.g move the Beacon between offices and want to set a new channel key (formerly known as system id).

On older versions of Beacons, you need to move the Beacon away from the router, or other rather cumbersome maneuvers to achieve the same effect. Read more.