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Specification
AudioOutputMode1 : Stereo
AudioOutputMode2 : Surround
AudioOutputMode3 : Mono
AudioOutputType : Headphone
Brand : Williams AV
BulletPoint : 76MHz-108MHz Wireless Stereo FM Radio Kit Audio Receiver PCB FM Module Kits Learning Electronics For Diy DC 1.8V-3.6V
BulletPoint1 : 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
BulletPoint2 : Operating Frequencies: 72.1-75.9MHz , 17 wideband channels (selectable)
BulletPoint3 : Total Harmonic Distortion: Less than 0.25% @ 1kHz (RF output)
BulletPoint4 : Rack Mount: Standard 19" Rack, one EIA rack space high, 1/2 space wide
BulletPoint5 : Ethernet: RJ-45, 10/100 Base-T IEEE 802.3 compliant, unique MAC address
Color : White
CompatibleDevices : Headphone
CompatibleDevices1 : Speaker
CompatibleDevices2 : Smartphone
ConnectivityTechnology : USB
ConnectivityTechnology1 : Wi-Fi
ConnectivityTechnology2 : Ethernet
ConnectorType : Auxiliary
FinishType : Chrome
Frequency : 108 MHz
HardwareInterface : 3_5_mm_audio
IncludedComponents : bulb light
InputVoltage : 5.5 volts
InstallationType : Wall
ItemName : Williams AV FM 557-12 Large-Area Dual FM Plus and Wi-Fi Assistive Listening System with FM T55 Transmitter, (12) PPA R37N Receivers, (12) EAR 022 Earphones, (3) NKL 001 Neckloops
ItemPackageDimensions_Height : 4.72 inches
ItemPackageDimensions_Length : 6.69 inches
ItemPackageDimensions_Width : 4.72 inches
ItemPackageQuantity : 1
ItemTypeKeyword : mp3-player-radio-transmitters
ItemTypeName : chargingadapter
Manufacturer : Williams AV
Material : Plastic
ModelName : Solar Chargers
ModelNumber : FM 557-12
MountingType : Wall Mount
NumberOfChannels : 17
NumberOfItems : 1
PartNumber : FM 557-12
PowerSourceType : Battery Powered
ProductDescription :

Williams AV FM 557-12 Large-Area Dual FM Plus and Wi-Fi Assistive Listening System with FM T55 Transmitter, (12) PPA R37N Receivers, (12) EAR 022 Earphones, (3) NKL 001 Neckloops

Key Features

• 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

SPECIFICATIONS

FM T55 Transmitter:

• Operating Frequencies: 72.1-75.9MHz , 17 wideband channels (selectable)
• Frequency Accuracy: ±2 ppm stability
• Deviation: ±75kHz maximum
• Pre-Emphasis: 75 microsec
• Frequency Response: 31-16000Hz, ±3 dB
• Signal-to-Noise Ratio: 67dB Transmited RF
• Total Harmonic Distortion: Less than 0.25% @ 1kHz (RF output)
• Common Mode Rejection: 57dB @ 1kHz, Mic or Line
• Rack Mount: Standard 19" Rack, one EIA rack space high, 1/2 space wide
• Ethernet: RJ-45, 10/100 Base-T IEEE 802.3 compliant, unique MAC address
• Weight: 3.2 lbs

PPA R37N Receiver:

• Channels: 17, accessed via seek button in battery compartment
• FM Deviation: 75kHz
• De-Emphasis: 75µS
• AFC Range: ± 120kHz
• Sensitivity: 2µV at 12dB Sinad with squelch defeated
• Input Overload: 100mV
• Frequency Response: 200–15kHz
• Modulation: FM, +/- 75kHz peak deviation
• Signal-to-Noise Ratio: 65dB min @ 100uV
• Receive Antenna: Integral with earphone/headphone cord
• Audio Output: 35 mW, peak into 16 ohms
• Output Connector: 3.5mm stereo/mono phone jack
• Weight: 4.6oz

EAR 022 Earphones:

• Plug: 3.5mm mono
• Driver Size: 23mm
• Nominal Impedance: 32Ω
• Freq. Response: 20-20kHz
• Max Power Input: 30mW
• Sensitivity: 118dB @ 1kHz
• Weight: 15g

ProductSiteLaunchDate : 2019-10-02T00:00:00.000-07:00
RadioBandsSupported : FM
Size : Large
Style : Modern
SupplierDeclaredDgHzRegulation : unknown
TunerTechnology : FM
UnitCount : 1
Voltage : 5 volts
WaterResistanceLevel : not_water_resistant
Wattage : 40 watts
WirelessCommStandard : 802_11_B