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Description
Williams AV FM 557 PRO D WAP Large-Area Dual FM/Wi-Fi Assistive Listening System With 4 FM R37 Receivers (DANTE)The FM Plus 557 assisted listening system now with integrated Wi Fi has replaced the existing 457 systems for public venues. The FM 557 Plus offers both FM and Wi Fi transmission from the same box for nearly the same cost as traditional FM systems. This system features the cutting edge PPA TT55 transmitter (replacing the T45 FM transmitter) with multiple digital audio input options and an OLED display with easy to manage navigation, and network
The FM Plus 557 assisted listening system – now with integrated Wi-Fi – has replaced the existing 457 systems for public venues. The FM 557 Plus offers both FM and Wi-Fi transmission from the same box for nearly the same cost as traditional FM systems.This system features the cutting edge PPA TT55 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.
This complete turnkey solution includes 4 PPA R37N receivers, each featuring seekbutton channel selection with access to 17 selectable wideband frequencies between 72.1-75.9MHz. The bundle includes a coax cable and rack panel kit for professional installation. The system is expendable, accommodating any number of listeners. This system complies with 2010 ADA guidelines for hearing assistance and is covered by Lifetime PLUS limited warranty.
The PRO version features coaxial cable and rack panel kit for professional installation. This kit comes with a Wireless Access Point.
System Includes
- (1) FM T55 transmitter
- (4) PPA R37N receivers
- (4) EAR 022 surround earphones
- (2) NKL 001 neckloops
- (2) BAT KT6 two-bay chargers and rechargeable batteries
- (1) ANT 005 remote coaxial antenna
- (1) IDP 008 ADA wall plaque
- (1) RPK 005 rack panel kit
- (1) WF WR10 Wireless Access Point.
Specifications
- Warranty - Yes
- Spec Sheet available - Yes
- Regulatory Compliance: 2.4GHz: IEEE802.11n, IEEE802.11g, IEEE 802.11b; 5.xGHz: IEEE 802.11n, IEEE 802.11a; 802.11ac IEEE802.3, IEEE802.3u, IEEE802.3ab
- Warranty (Length/Type): 3 Years
- Minimum Frequency Response (Bandwidth): 20 Hz
- Minimum Frequency Response (Bandwidth): 0.02 kHz
- Maximum Frequency Response (Bandwidth): 20000 Hz
- Maximum Frequency Response (Bandwidth): 20 kHz
- Signal to Noise Ratio: 65 dB
- Operating Temperature (Maximum): 122 F
- Operating Temperature (Minimum): 32 F
ANT 005
- Use with: PPA T45,PPA T45NET, PPA T27 Transmitters
- Connector type: F-connector
- Cable type: RG 59 coax
- Nominal Impedance: 75 Ohm
- Total Cable Length: 22 ft
- Active Antenna Length: 80 in
EAR 022
- Style: Around-ear speaker
- Plug: 3.5mm mono
- Cord: 39"
- Driver Size: 23 mm
- Nominal Impedance: 32Ohm
- Freq. Response: 20 - 20kHz
- Weight:15g
- Max Power Input: 30 mW
- Sensitivity: 118 dB @ 1kHz
PPA R37N
- Dimensions: 4.1" x 2.85" x 1.38" (104 x 72 x 35mm)
- Weight: 4.6oz (130g) with batteries. 2.6oz (73g) without batteries
- Color: Black
- Battery Type: (2) AA Alkaline or 2 x AA NiMH
- Battery Life: Two (2) AA non-rechargeable alkaline batteries (BAT 001), approx. 50 hrs
- (2) AA rechargeable NiMH batteries (BAT 026), 1500 mAh, approx. 32 hrs
- Current Consumption: 52mA nominal
- Channels: 17, accessed via seek button in battery compartment
- Operating Freq.: 72.1, 72.2, 72.3, 72.4, 72.5, 72.6, 72.7, 72.8, 72.9, 74.7, 75.3, 75.4, 75.5, 75.6, 75.7, 75.8, 75.9 MHz*
- Intermediate Freq.: 75 kHz
- FM Deviation: 75 kHz
- De-Emphasis: 75 µS
- LED Indicator: Power: Green; Low Battery: Flashes Green
- AFC Range: ± 120 kHz
- Sensitivity: 2 µV at 12 dB Sinad with squelch defeated
- Input Overload: 100 mV
- Frequency Response: 200 – 15 kHz
- Modulation: FM, +/- 75 kHz peak deviation
- Signal-to-Noise Ratio: 65 dB min @ 100 uV
- Receive Antenna: Integral with earphone/headphone cord
- Audio Output: 35 mW max, peak into 16 ohms
- Output Connector: 3.5 mm stereo/mono phone jack
- Earphone: Earbud-type with foam cushion, 3.5 mm plug, 32 Ohm
- Auto Shut-off: Enters sleep mode after approx 6 mins of no RF signal
- Approvals: FCC, Industry Canada, RoHS, WEEE
- Warranty: Lifetime PLUS Limited Warranty, 90 Days on most accessories.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
Great opener
Color: Blue
Had a battery operated can opener before and was always changing the batteries. Love the safety cut and this works great now that I can just charge it with my phone charger. Fits in my drawer so no counter space used
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026
★★★★★ 5
Can opener
Color: Black
Great can opener. Charge lasts a good while.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
★★★★★ 1
Leaves an EXTREMELY SHARP edge - cuts off entire lid from sides of can!
Color: Blue, Color: Blue
This can opener cut off the whole top of the tuna cans and left an insanely sharp, wobbly, very thin edge of the top of the can that nearly cut me because there was no heavy metal lip left behind to hold the structure of the top of the can! This is a very bad feature that is going to really hurt someone! I do NOT recommend this for anyone! Needs a product recall!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
★★★★★ 3
Lackluster
Color: Black, Color: Black
It does what it’s supposed to but only for a couple of cans before it dies. I’ve learned that I have to charge it before I put it away or it’s dead when I need it next and that’s after 2-3 cans. It’s small and fits in my drawer nice, does what it’s supposed to, just a little disappointed in how long it lasts
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Reviewed in the United States on May 21, 2026
★★★★★ 4
Don't mind the noise
Color: Blue
Works great, does exactly what it is supposed to do. Just very loud.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
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