HP Poly Trio Wireless Expansion Microphone for Poly Trio Conference Phones – 360° Pickup, Wireless (85X00AA)

The Poly Trio Wireless Expansion Microphone (85X00AA) extends the audio pickup coverage of Poly Trio 8300 and Trio 8800 conference phones by adding two wireless satellite microphones that can be placed anywhere on the conference table. Sold as a pair, each microphone provides up to 20 feet of audio pickup range and includes an individual mute button for local control. In larger meeting rooms where the Trio's built-in 360° microphone can't reach all participants comfortably, the expansion mics close the gap without additional conferencing hardware.

The Telecom Spot Take

The Trio 8800 is already an excellent conference phone on its own — the built-in three-microphone array handles most standard conference room sizes well. The wireless expansion mics become essential once the room gets longer than about 20 feet, or when seating arrangements push participants away from the center unit. Placing one mic at each end of the table covers a boardroom-length layout without anyone straining toward the phone. The individual mute buttons on each expansion unit are a practical detail: remote participants appreciate it when meeting room participants can mute locally without touching the main unit.

Key Features

• Pair of Wireless Satellite Mics: Two microphones per order — place one at each end of the conference table for full room coverage.
• 20 ft Pickup Range per Mic: Each expansion mic covers up to 20 feet of audio pickup, matching the Trio 8800's own range.
• Individual Mute Buttons: Each expansion mic has its own mute button for local muting without accessing the main conference unit.
• Wireless Connection: No cables between the expansion mics and the Trio base — flexible placement anywhere on the table.
• Trio 8300/8800 Compatible: Designed specifically for use with Poly Trio 8300 and Trio 8800 conference phones.

Technical Specifications