Yealink MB-Remote.
MB-Remote

Wireless presentation pod for MeetingBoard series
-microphone mute/unmute
-speaker volume +/-
-camera on/off
-presentation pointer
-1x MB-Remote, 1x MB-Remote Dongle, 2x AAA batteries

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Yealink MB-Remote
Yealink, MB-Remote, τηλεχειριστήριο, αξεσουάρ, ηλεκτρονικά
Yealink MB-Remote
Yealink, MB-Remote, remote control, accessory, electronics