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LR4200 iDSP infrared receiver front view with courtroom displayed as the channel name.
LR4200 infrared receiver side view showing the 3.5 mm standard headset jack and belt clip on the back
Back of the LR4200 iDSP 72 MHz receiver

Intelligent DSP IR Receiver

Item:LR-4200-IRb Price: Original price was: $269.00.Current price is: $215.20.B-STOCK

The LR-4200-IR receiver from Listen Technologies offers outstanding audio clarity and quality with the best range and reception in its class.

Part of our Intelligent Digital Signal Processing (iDSP) line, the LR-4200-IR is the smallest device of its kind, resulting in a compact unit that won’t burden the end user. An integrated neck loop/lanyard makes each receiver easy to wear, and the DSP loop driver offers an improved listening experience for anyone with a T-coil-equipped hearing aid. Dual 3.5mm output jacks also allow receivers to be shared between users.

Each receiver is also equipped with a micro USB connection, making it easy for venues to charge and update the units via any standard USB port.

Extended speaking sessions, presentations and more can be challenging for other devices, but the LR-4200-IR incorporates advanced rechargeable batteries that offer long life and reliable power. Charge status, along with channel information and volume level, are easy to read on the integrated OLED display.

From corporate environments to conference proceedings and beyond, the LR-4200-IR is an outstanding receiver choice for any venue looking to offer convenient, reliable assistive listening.

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In stock

Includes

One (1) LR-4200-IR Intelligent DSP IR Receiver*

 

*The LR-4200-IR comes with a quick start guide and a non-proprietary field replaceable Lithium-ion battery.

Highlights

  • High performance IR receiver offering best-in-class sensitivity and range
  • Integrated neck loop/lanyard with DSP loop driver for an enhanced T-coil listening experience
  • Smallest device of its kind makes it easier to wear and use and for venues to dispense, store and maintain
  • OLED display showing channels, battery status, channel status, volume level, and more
  • Limited lifetime warranty with hassle-free support
  • Lanyard and belt clip options offer convenient and discreet choices for the end user
  • Advanced rechargeable battery technology eliminates the costs and hassles associated with frequent battery replacement
  • Designed for single-channel applications

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SKU: LA-140
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Specs

+Audio

System Distortion< 2% total harmonic distortion (THD) at 80% deviation
Audio Output JacksTwo (2) 3.5 mm (0.14 in.) connectors, unbalanced, 0 dBu nominal output level, 16 mW maximum, impedance 32 ohm, accepts mono or stereo phone plug or LA-430 Intelligent Ear Phone/Neck Loop Lanyard
System Frequency Response63 Hz - 15 kHz (±3 dB)
System Signal to Noise Ratio> 60 dB

+Controls

User ControlsPower on/off and volume up/down
ProgrammingVia software and USB port, Auto Seek, Jack Sense, Squelch, Auto Power, Auto Off, Stereo, Brightness, Channel Name
Set-up ControlsPress and hold up/down volume buttons for 5 seconds to enterchannel adjust, use up/down to select channel

+Indicators

DisplayOLED - Channel designation, battery level, unit number, charging status, volume status
LEDFlashes when batteries are low or to indicate charging, solid when fully charged

+RF

Carrier Frequencies2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz
Number of ChannelsFour (4) selectable channels
Frequency Accuracy± .005% stability 32 to 122 ºF (0 to 50 ºC)
ModulationFM Wideband, ±50 kHz deviation max, 50 uS de-emphasis

+IR

Coverage Area30,000 ft² (2787 m²) single channel with LT-84/LA-141 or 40,000 ft² (3716 m²) single channel with LT-82/LA-140
SquelchProgrammable in 20 steps, automatic on loss of IR signal
Power Save ModeTurns unit off after a specified time of no IR signal, default is 30 minutes
SensitivityBetter than one (1) nW/cm2 @40 dB SNR

+Power

Power SupplyMicro USB connector, 5 V, 500 mA
Battery TypeLithium Ion
Battery Life8 Hours of typical use
Battery Charging TimeFully charged in 2.5 Hours

+Physical

ColorFlat Black
Unit Weight with Batteries2.8 oz. (79.4 g)
Shipping Weight3.5 oz. (99.2 g) with a 1 lbs. (0.45 kg) minimum
Dimensions (H x W x D)3.75 x 2.0 x 0.64 in. (9.6 x 5.0 x 1.7 cm)
Unit Weight1.9 oz. (53.9 g)
Dimensions with Belt Clip3.75 x 2.0 x 0.80 in. (9.6 x 5.0 x 2.1 cm)

+Environmental

Temperature - Operation14 to 104 ºF (-10 to 40 ºC)
Temperature - Storage(-)4 to 122 °F (-20 to 50 °C)
Relative Humidity0 to 95% relative humidity, non-condensing

+Compliance

StandardsFCC Part 15, ICS-03, CE, RoHS, WEEE

FAQs

+What is the difference between the LR-4200 and the LR-5200?

The main difference is that the LR-5200 is programmable with a multi-function Listen button. It gives the user an opportunity to program only the desired channels and lockout the unused channels. This makes it simple to operate for end users that need to select between multiple active channels. The Listen Button can also be used to search for an active channel and lock the receiver on a specific channel.

+What is the purpose of Squelch?

The purpose of squelch is to mute the audio output of your receiver when the signal from the transmitter is turned off or is too weak to be received. Without squelch you would hear radio noise in your earphone. The squelch function can be programmed to the desired setting.

+What is the warranty on the Lithium-ion battery?

The Lithium-ion battery has a 1 year warranty. All other accessories have a 90-day warranty. Listen Warranty

+What type of battery technology does the LR-4200 use?

The LR-4200 uses a non-proprietary field replaceable Lithium Ion battery.

+How long does it take to fully charge the LR-4200?

It varies dependent on the depletion of the battery. A fully depleted battery will charge in 2.5 hours or less.

+How many LR-4200 receivers can I use in a system?

As many as you need, the number is endless.

+How long will the LR-4200 run on a fully charged battery?

The LR-4200 will run continuously for 8 hours on a fully charged battery