The Automatic Brake Light feature on the Firefly works exactly like the helmet's version. Please note that they're only available if you have the Lumos Remote (not Remote Lite). This feature is really useful when you're slowing down rapidly and need traffic behind you to notice you.
- By default, this feature is disabled on the App. To enable it, simply head on over to the Sync tab on your App.
- Then, scroll down to the end of the page and click on Sync Grid Settings. This will bring you to a page where you'll be able to view a toggle button called "Automatic Brake Light"
- Toggle it on then adjust the sensitivity to your liking/riding.
- Hold and long press on either the L or R buttons on your remote. The Remote will blink on both buttons once to indicate the brake settings have taken effect.