Yealink CM20 Ceiling microphone Practical and Aesthetic Integration Yealink CM20 features an 80mm low-profile design and a detachable magnetic cover with a snap-on attachment (available in black and white color options). The overall design ensures seamless integration and aesthetic appeal, while facilitating effortless deployment and maintaining the integrity of the ceiling. • 1x SkySound CM20 Ceiling Microphone • 1x White Mesh Cover • 1x Black Mesh Cover • 1x Ceiling Tile Bridge • 1x Dust Cover • including 2-year AMS Versatile Adaptability Yealink CM20 provides flexible deployment options for divers meeting room styles.   High Fidelity of Voice CM20 is equipped with 16 omnidirectional microphone units, providing unparalleled audio clarity across 8 independent pickup zones. It effectively covers up to a radius of 4m nominal coverage, with a high quality radius of 3m full-duplex audio capture, ideal for medium to large spaces. The EQ tuning of the CM20 is specifically tailored to accentuate the exceptional quality of human vocals.   You would just need to go into the RoomConnect on the MTR and turn on separate Microphone Mute Control then you can mute that microphone when not in use. Link on how to do this – https://support.yealink.com/en/portal/knowledge/show?id=6459d54c0a11b818a7542883