Williams AV IR SYS31-00 – Infrared Assistive Listening System (PoE, Conference Mic)
Williams AV IR SYS31-00 – Infrared Assistive Listening System (PoE, Conference Mic) is backordered and will ship as soon as it is back in stock.
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Williams AV IR SYS31-00 – Infrared Assistive Listening System (PoE,...
Product Overview
The Williams AV IR SYS31-00 is a medium-area infrared assistive listening system with Power over Ethernet, packaged with a conference microphone for boardrooms and meeting spaces. It combines the SoundPlus T3 infrared transmitter with two four-channel receivers and an omnidirectional conference mic, delivering a room-contained infrared assistive listening system for confidential government and commercial environments. Infrared keeps the signal inside the room, unlike RF or Wi-Fi.
Product Description
The IR SYS31-00 targets conference rooms and boardrooms that need both assistive listening and a table microphone. The system includes the IR T3 medium-area infrared transmitter, two WIR RX22-4 four-channel receivers, a MIC 149 omnidirectional conference microphone, surround earphones, neckloops, and batteries. The transmitter broadcasts on up to two channels (2.3/2.8 or 3.3/3.8 MHz) for dual-language interpretation or a single feed, with contained infrared coverage up to 32,000 ft2 single-channel using the included receivers and correctly placed emitters. Power over Ethernet and a universal 48 VDC supply support flexible installation, and RS-232 control integrates the system into third-party AV control. This configuration suits commercial meeting spaces where a designer wants assistive listening and voice pickup from one deployment. Expand capacity with additional WIR RX22 receivers and earphones.
Key Features
- Conference-ready package — Includes an omnidirectional table microphone for meeting-room voice pickup.
- Room-contained privacy — Infrared signal does not leave the room, ideal for confidential meetings.
- Two-channel operation — Supports dual-language interpretation or one assistive-listening feed.
- PoE-ready — Power over Ethernet plus universal 48 VDC supply.
- Large coverage — Up to 32,000 ft2 single-channel with included receivers.
- Telecoil support — Neckloops included for hearing-aid users.
- Control integration — RS-232 for third-party AV control systems.
Typical Applications
- Boardroom and conference room assistive listening with voice pickup
- Government spaces requiring contained audio
- Commercial meeting spaces and training rooms
- Auditorium and multi-purpose room interpretation
Technical Specifications
| Technology | Infrared (line-of-sight, room-contained) |
| Transmitter | IR T3 medium-area, 2.3/2.8 or 3.3/3.8 MHz |
| Included receivers | 2 x WIR RX22-4 (4-channel) |
| Microphone | MIC 149 omnidirectional conference mic |
| Coverage | Up to 32,000 ft2 (single-channel) |
| Power | 48 VDC universal supply; optional PoE |
| Warranty | 2-year parts and labor |
Full specifications: Williams AV SoundPlus T3 infrared system spec sheet.
Frequently Asked Questions
What makes this different from the IR SYS30-00?
The SYS31-00 adds an omnidirectional conference microphone for table voice pickup in meeting rooms.
Why infrared for this room?
Infrared is contained within the space, providing the privacy required in confidential and government settings.
How is it powered?
Via the included 48 VDC universal supply or optional Power over Ethernet.
Does it support hearing aids?
Yes, using the included neckloops for telecoil-equipped hearing aids.
Can it integrate with a control system?
Yes, through RS-232 monitoring and control.
What warranty applies?
Two-year parts and labor; Creation Networks supports design and integration.
At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
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