Williams AV IR T3-00 – Medium-Area Infrared Transmitter (PoE)

Product Overview

The Williams AV IR T3-00 is a commercial-grade infrared transmitter for secure, room-contained assistive listening and language interpretation. As the core of a medium-area infrared assistive listening system, it broadcasts audio on up to two channels within a single room, making it well suited to courtrooms, boardrooms, and government spaces where signal must not pass through walls. The transmitter supports Power over Ethernet for simplified installation and integrates into rack-mounted AV systems with line-level and microphone inputs.

Product Description

The IR T3-00 (SoundPlus T3) is a medium-area infrared transmitter designed for confidential, contained audio distribution in commercial AV installations. Because infrared light does not travel through walls, it is the preferred assistive listening technology for courtrooms, sensitive government meeting spaces, and multi-room facilities where channel privacy and RF containment matter. The transmitter operates in two-channel mode on 2.3 and 2.8 MHz (or 3.3 and 3.8 MHz) or in single-channel mode, allowing designers to deliver dual-language interpretation or a single assistive-listening feed. Coverage reaches up to 32,000 ft2 with a WIR RX22-4 receiver in single-channel mode when paired with the appropriate infrared emitters. Each channel provides a line-level Phoenix-style input with an audio-level LED, plus a 3.5 mm microphone input with gain control. A universal 48 VDC power supply (100-240 VAC, 18 W) and optional PoE support give integrators flexible power and cabling options, and RS-232 monitoring supports third-party control systems. The IR T3-00 pairs with Williams AV infrared emitters and WIR RX22 receivers to complete a room system.

Key Features

• Contained infrared coverage — Signal stays inside the room, providing privacy for courtrooms and confidential meetings.
• Two-channel operation — Supports dual-language interpretation or two independent audio feeds in one space.
• Power over Ethernet — Optional PoE simplifies installation and reduces local power runs.
• Professional audio inputs — Line-level Phoenix connectors per channel plus a 3.5 mm mic input with gain control.
• Large coverage area — Up to 32,000 ft2 single-channel with a WIR RX22-4 receiver and appropriate emitters.
• RS-232 control — Monitoring and control for integration with third-party AV control systems.
• Commercial warranty — Two-year parts and labor coverage.

Typical Applications

• Courtrooms and government spaces requiring signal containment
• Boardroom and conference room assistive listening
• Auditorium and multi-purpose room interpretation
• Training rooms and commercial meeting spaces

Technical Specifications

Full specifications: Williams AV SoundPlus T3 spec sheet.

Frequently Asked Questions

Why choose infrared over RF or Wi-Fi for this room?
Infrared light does not pass through walls, so it keeps audio contained and private — the standard choice for courtrooms and confidential government meetings.

How many channels does it support?
It runs two channels (for example, dual-language interpretation) or a single channel for one assistive-listening feed.

Can it be powered over the network?
Yes. It supports optional PoE in addition to the included 48 VDC universal power supply.

What receivers and emitters does it require?
Pair the IR T3-00 with Williams AV infrared emitters and WIR RX22 series receivers sized to the room's coverage area.

Does it integrate with a control system?
Yes. RS-232 monitoring and control allow integration with third-party AV control platforms.

What warranty applies?
The transmitter carries a two-year parts-and-labor warranty; Creation Networks can assist with system design and integration.