• Listen Technologies LR-4200-IR Intelligent DSP IR Receiver
  • Listen Technologies LR-4200-IR Intelligent DSP IR Receiver side
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Listen Technologies LR-4200-IR Intelligent DSP IR Receiver

Listen Technologies LR-4200-IR Intelligent DSP IR Receiver

SoundPro Item: 72598 | Part Number: LR-4200-IR

$251.00
$283.00 $251.00
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MSRP: $283.00 | MAP: $251.00

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  • Best-In-Class Infrared Sensitivity Maintains Signal Lock At One Nanowatt Per Square Centimeter
  • DSP Loop Driver Integrated Into Neck Loop Lanyard Eliminates External Accessories For T-Coil Users
  • Dual 3.5mm Jacks Allow Two Patrons To Share One Receiver During High-Demand Events
  • Fully Rechargeable In 2.5 Hours Via Micro USB For Simplified Fleet Charging
  • OLED Display Provides Real-Time Feedback On Channel Selection And Battery Status
  • Software Programmable Controls Enable Batch Configuration Of Auto Power Off And Squelch Threshold
  • Field Replaceable Lithium-Ion Battery Extends Product Lifecycle Without Factory Service
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The LR-4200-IR addresses the needs of venues requiring ADA-compliant assistive listening with a four-channel infrared receiver engineered for corporate boardrooms, conference centers, and houses of worship. Its advanced DSP circuitry ensures intelligible audio reproduction across extended sessions where clarity is non-negotiable, while the integrated neck loop driver eliminates the need for separate accessories when serving patrons with T-coil-equipped hearing aids.

Built for high-utilization environments where equipment must perform reliably without constant intervention, this receiver incorporates lithium-ion battery technology that provides eight hours of operation and recharges fully in 2.5 hours via standard micro USB. Dual 3.5mm output jacks enable two listeners to share a single unit when demand exceeds inventory, and the OLED display provides at-a-glance confirmation of channel selection, battery status, and volume level without requiring staff assistance.

Its compact form factor and sub-three-ounce weight reduce user fatigue during lengthy events, while field-replaceable batteries and software-programmable settings via USB streamline fleet management for integrators and facility operators managing dozens or hundreds of units across multiple spaces.

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Specifications

Certifications
Compliance Standards
FCC Part 15, ICS-03, CE, RoHS, WEEE, ADA 706, CBC 11B-706
Audio
System Frequency Response
63 Hz - 15 kHz (±3 dB)
System Signal To Noise Ratio
> 60 dB
System Distortion
< 2% THD at 80% deviation
Audio Output Jacks
Two (2) 3.5 mm unbalanced, 0 dBu nominal, 16 mW maximum, 32 ohm impedance
Controls
User Controls
Power on/off and volume up/down
Set-Up Controls
Press and hold up/down volume buttons for 5 seconds to enter channel adjust
Programming
Via software and USB port, Auto Seek, Jack Sense, Squelch, Auto Power, Auto Off, Stereo, Brightness, Channel Name
Included Items
Includes
One (1) LR-4200-IR Intelligent DSP IR Receiver, quick start guide, non-proprietary field replaceable Lithium-ion battery
Environmental
Operating Temperature
14 to 104 ºF (-10 to 40 ºC)
Storage Temperature
-4 to 122 ºF (-20 to 50 ºC)
Relative Humidity
0 to 95% relative humidity, non-condensing
Temperature – Operation
14 to 104 ºF (-10 to 40 ºC)
Temperature – Storage
(-)4 to 122 °F (-20 to 50 °C)
RF
Carrier Frequencies
2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz
Number Of Channels
Four (4) selectable
Modulation
FM Wideband, ±50 kHz deviation max, 50 µS de-emphasis
Frequency Accuracy
±0.005% stability 32 to 122 ºF (0 to 50 ºC)
IR
Coverage Area
30,000 ft² single channel with LT-84/LA-141 or 40,000 ft² with LT-82/LA-140
Sensitivity
Better than 1 nW/cm² @ 40 dB SNR
Squelch
Programmable in 20 steps, automatic on loss of IR signal
Power Save Mode
Turns unit off after specified time of no IR signal, default 30 minutes
Indicators
Display
OLED - Channel designation, battery level, unit number, charging status, volume status
LED
Flashes when batteries are low or to indicate charging, solid when fully charged
Power
Power Supply
Micro USB connector, 5 V, 500 mA
Battery Type
Lithium Ion
Battery Life
8 hours of typical use
Battery Charging Time
Fully charged in 2.5 hours
Physical
Dimensions (H x W x D)
3.75 x 2.0 x 0.64 in. (9.6 x 5.0 x 1.7 cm)
Dimensions With Belt Clip
3.75 x 2.0 x 0.80 in. (9.6 x 5.0 x 2.1 cm)
Unit Weight
1.9 oz. (53.9 g)
Unit Weight With Batteries
2.8 oz. (79.4 g)
Shipping Weight
3.5 oz. (99.2 g) with 1 lb (0.45 kg) minimum
Color
Flat Black
Compliance
Standards
FCC Part 15, ICS-03, CE, RoHS, WEEE, ADA 706, CBC 11B-706

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