Listen Technologies LR-4200-IR ListenIR Infrared Receiver

• High performance IR receiver with extreme sensitivity providing the best pickup and range of any device of its kind
• Integrated neck loop/lanyard with DSP loop driver improves the listening experience for T-coil users
• Smallest device of its kind makes it easier to wear and use and for venues to dispense, store and maintain
• OLED display which shows unique channel names, battery status, channel status, volume status and charge activation
• Limited Lifetime Warranty with hassle-free support
• Can be worn around the neck or with the belt clip, making it the most discreet listening device on the market
• Advanced green battery technology dramatically reduces costs of ownership and hassles while reducing the number of batteries in the landfill
• Use for single channel applications

General

• Audio
  • System Distortion: < 2% total harmonic distortion (THD) at 80% deviation
  • Audio Output Jacks: Two (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: Mono: > 60 dB, Stereo: > 52 dB
• Controls
  • User Controls: Power on/off and volume up/down
  • Programming: Via software and USB port, Auto Seek, Jack Sense, Squelch, Auto Power, Auto Off, Stereo, Brightness, Channel Name
  • Set-up Controls: Press and hold up/down volume buttons for 5 seconds to enterchannel adjust, use up/down to select channel
• 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
• RF
  • Carrier Frequencies: 2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz
  • Number of Channels: Four (4) selectable channels
  • Frequency Accuracy: ± .005% stability 32 to 122 ºF (0 to 50 ºC)
  • Modulation: FM Wideband, ±50 kHz deviation max, 50 uS de-emphasis
• IR
  • Coverage Area: 30,000 ft² (2787 m²) single channel with LT-84/LA-141 or 40,000 ft² (3716 m²) single channel with LT-82/LA-140
  • Squelch: Programmable in 20 steps, automatic on loss of IR signal
  • Power Save Mode: Turns unit off after a specified time of no IR signal, default is 30 minutes
  • Sensitivity: Better than one (1) nW/cm2 @40 dB SNR
• 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
• Environmental
  • Temperature - Operation: 14 to 104 ºF (-10 to 40 ºC)
  • Temperature - Storage: (-)4 to 122 °F (-20 to 50 °C)
  • Relative Humidity: 0 to 95% relative humidity, non-condensing
• Compliance
  • Standards: FCC Part 15, ICS-03, CE, RoHS, WEEE

Physical & Dimensions

• Unit Weight: 53.9g
• Unit Weight with Batteries: 79.4g
• Height: 96mm
• Width: 50mm
• Depth: 17mm
• Depth with Belt Clip: 21mm