WIR TX75 D Infrared Transmitter 3.3/3.8 MHZ
The WIR TX75 D Infrared transmitter ensures participants in your conference room, courtroom, classroom or other mid-sized venue receive direct, clear communication of your message without sacrificing security. The sleek and stylish TX75 D is designed to maximize coverage area - now up to 12,000 square feet* in single-channel mode when using the RX22-4 receiver. Two slaves (WIR TX75 S) can be added for additional coverage up to 12,000 square feet each (36,000 sq. ft. total), when mounted up to 100 feet from the master transmitter. Placing additional slaves in the same room increases coverage and enhances freedom of movement. A single CAT-5 cable carries both power and signal to slaves–truly a one-cable connection. Mounting bracket and power supply are included.
More information: https://www.williamssound.com/catalog/wir-tx75-d