Sena R2 Quick Start Manual page 11

LED Taillight
Using the SENA Button
LED On and Solid
Day Flash
Blinking
Note: Do not tap the button continuously.
Using the Sena Cycling App
You can control the LED Taillight through the Sena Cycling App.
1s~
TAP
1x
1s~
TAP
1x
Night Flash
Blinking
LED Off
1s~
TAP
1x
TAP
1x