Phonak Roger Clip-On Mic User Manual page 37

Only one speaker can be heard at a time. When two
people speak at the same time, the person who talked
first will be heard. When they stop talking, the other
speaker will be heard.
The speaker with the primary microphone (the one
with the sticker on the back) should never
move more than 10 m / 30 feet away from the group
as this may disable the other Roger microphones.
If the primary Roger Clip-On Mic is turned off or
moves out of range, the secondary Roger
microphones will start blinking red and will stop
transmitting.
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