Williams AV FM 557-12 PRO D Dante Assistive Listening System
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Williams AV FM 557-12 PRO D Dante Assistive Listening System

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The FM 557 PRO system package is a complete turnkey solution includes 12 PPA R37N receivers and an FM+ D transmitter for both FM and Wi-Fi transmission from the same box. The PRO bundle includes a coax cable, and rack panel kit for professional installation.

This system features the cutting edge PPA T55 transmitter (replacing the T45 FM transmitter) with multiple digital audio input options and an OLED display with easy-to manage navigation, and network control features.

Each PPA R37N receivers features a seek button channel selection with access to 17 selectable wideband frequencies between 72.1-75.9MHz. The system is expendable, accommodating any number of listeners. This system complies with 2010 ADA guidelines for hearing assistance all for nearly the same cost as traditional FM systems.

System Includes

  • FM T55 Dante-enabled transmitter
  • 12x FM R37 receiver
  • 12x EAR 022 surround earphone
  • 3x NKL 001 neckloop
  • CHG 3512 12-bay charger
  • 12x BAT 026-2 AA NiMH rechargeable battery
  • ANT 005 remote coaxial antenna
  • IDP 008 ADA wall plaque
  • RPK 005 rack panel kit



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