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Williams AV FM 557-12 FM+ Large-Area Dual FM and Wi-Fi Assistive Listening System with (12) R37 Receivers
FM 557-12|WS-FM55712
Williams AV FM 557-12 FM+ Large-Area Dual FM and Wi-Fi Assistive Listening System with (12) R37 Receivers
FM 557-12|WS-FM55712
Key Features
What's Included
- Complete turnkey solution
- Includes 12 PPA R37N receivers and an FM+ D transmitter for both FM and Wi-Fi transmission
- PRO bundle includes a coax cable, and rack panel kit for professional installation
Key Features
What's Included
- Complete turnkey solution
- Includes 12 PPA R37N receivers and an FM+ D transmitter for both FM and Wi-Fi transmission
- PRO bundle includes a coax cable, and rack panel kit for professional installation
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Become an ADI CustomerKey Features
What's Included
- Complete turnkey solution
- Includes 12 PPA R37N receivers and an FM+ D transmitter for both FM and Wi-Fi transmission
- PRO bundle includes a coax cable, and rack panel kit for professional installation

Williams AV
Williams AV FM 557-12 FM+ Large-Area Dual FM and Wi-Fi Assistive Listening System with (12) R37 Receivers
FM 557-12 | WS-FM55712
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Overview
Specifications
Documents
Product Overview
FM Plus Large-area Dual FM and Wi-Fi assistive listening system with 12 FM R37 receivers. System includes: (1) FM T55 transmitter, (12) PPA R37N receivers, (12) EAR 022 surround earphones, (3) NKL 001 neckloops, and (1) IDP 008 ADA wall plaque. Replaces FM 457-12
Main Features
- Complete turnkey solution
- Includes 12 PPA R37N receivers and an FM+ D transmitter for both FM and Wi-Fi transmission
- PRO bundle includes a coax cable, and rack panel kit for professional installation
- System complies with 2010 ADA guidelines for hearing assistance
General Information
Name: Williams AV FM 557-12 FM+ Large-Area Dual FM and Wi-Fi Assistive Listening System with (12) R37 Receivers
Category: Williams AV, Pro AV, Commercial Audio, Pro Assistive Listening Devices
UPC Code: 707976001351
Country of Origin: . Country of origin is subject to change.
Specifications
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ADI Part Number WS-FM55712 Brand Name Williams AV Manufacturer Williams AV, LLC Manufacturer Part Number FM 557-12 Product Model FM 557-12 Product Name FM+ System Package (12 R37 Receivers) Product Type Wireless Microphone System
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Operating Range 997.38 ft
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Maximum Frequency Response 16 kHz Minimum Frequency Response 31Hz
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Battery Chemistry Alkaline, Nickel Metal Hydride (NiMH) Battery Run Time 32 Hour|50 Hour Battery Size Supported AA Number of Batteries Supported 2
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XLR Yes
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Maximum Operating Frequency 75.90MHz Minimum Operating Frequency 72.10MHz
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Depth 8.25" Height 1.72" Width 8.45"
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Input Voltage 100-240V AC
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Length 18.5"
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Limited Warranty 2-Year
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Environmental Certification RoHS 3, WEEE Environmentally Friendly Yes Package Contents - 1 x FM T55 transmitter
- 12 x PPA R37N Receivers
- 12 x EAR 022 Surround Earphones
- 3 x NKL 001 Neckloops
- 1 x IDP 008 ADA Wall Plaque
- AA Alkaline Batteries (BAT 001-2)