COMPASS Pro performs regular Self-Test analyses to verify that all sensors work correctly in the background by running continuous diagnostic scans. If any abnormality is detected, the COMPASS Pro device will respond by locking out all User input, and the corner LEDs will flash RED and YELLOW. If these LEDs keep flashing RED and YELLOW, stop using COMPASS Pro and contact customer service.

Note: Self-Test does not test the visual and audible alert systems, so the User should still test these before each use.

WARNING: DO NOT use COMPASS Pro if RED and YELLOW lights are on or flashing.