With the additional expansion microphones, the CP860 is the ideal conference phone for medium to large size conference room that need extended coverage at the far ends of a conference table. The expansion microphones extend the range of the CP860 by an additional 10 feet respectively.
The Expansion Microphones are sold individually (per each), NOT as a set of 2 units. Two units maximum per CP860 Conference Phone
• Optima HD voice, full duplex technology
• 10-feet (3-meters) 120°H voice pickup
• Capacitive mute touchpad with bicolor LED
• Echo cancellation
• For use with Yealink CP860