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Listen Tech LR-42 IR Stethoscope Receiver (Discontinued)
Part # LR-42
Model # LR-42

The LR-42 stethoscope receiver is a very easy to use, comfortable and user friendly. This all-in-one receiver can receive up to four channels in mono or stereo. It uses standard AAA alkaline batteries for more than 30 hours of use, or a NiMH rechargeable battery pack that delivers 15 hours of use per charge.

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Description

Details

The LR-42 stethoscope receiver is a very easy to use, comfortable and user friendly. This all-in-one receiver can receive up to four channels in mono or stereo. It uses standard AAA alkaline batteries for more than 30 hours of use, or a NiMH rechargeable battery pack that delivers 15 hours of use per charge. The unit features auto shut-off after 30 minutes of no audio carrier, further extending battery life. The LR-42 boasts high performance audio specs in a small package and is compatible with other manufacturers' products. The LR-42 is used for government compliance (such as ADA), assistive listening, language interpretation, live theatre, houses of worship, courtrooms, secure rooms and auditory description.

Features

Features

  • Secure wireless communication - ideal for applications where isolation of the signal is important or where security is a concern
  • Stylish, all-in-one unit stetho design - no wires to tangle for easy distribution
  • Receives up to four channels mono or stereo - provides outstanding performance with crystal clear sound
  • Uses standard AAA batteries (available anywhere) or rechargeable Listen NiMH battery pack - gives you ultimate flexibility in managing battery life
  • Auto shut-off feature (after 30 minutes of no carrier) - saves battery life
  • Ear tips can be easily cleaned or replaced
Specification
RF
Carrier FrequenciesSelectable: 2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz
Number of Channels4 selectable channels
IR Detectors2 detectors under front IR lens
Sensitivity1 nW/cm2 at 40 db SNR
Frequency Accuracy+/- .005% stability 0 to 50C
SquelchAutomatic on loss of RF signal (40 db SNR)
Audio
System Frequency Response63Hz - 15kHz (+/- 3dB)
System Signal to Noise Ratio(A-weighted)>58dB
System Distortion<2% total harmonic distortion (THD)
Audio Output Jacks3.5 mm connector unbalanced, mono or stereo headphones
Audio Output Power20 mW maximum at 32 ohms
Controls
User ControlsVolume, Power, Channel Select
ProgrammingChannel Lock, Auto Find, Auto Seek, Auto Shut-Off,Audible Option
Indicators
Unit PowerInicated by current channel selection LED
Channel SelectionRed LED illuminates on the current channel selection
Audible IndicatorAudio beep in headset indicates low batteries, channel lock, power on/off
PowerSpecifications
Battery TypeTwo AAA alkaline batteries or NiMH battery pack
Battery Life30 hours alkaline, 15 hours NiMH rechargeable pack(LA-364)
Battery ChargingFully Automatic with NiMH battery pack and LA-350 charger
Environmental
Temperature - Operation-10 C (14 F) to +40 (104 F)
Temperature - Storage-20 C (-4 F) to +50 (122 F)
Humidity0 to 95% relative humidity, non-condensing
Physical
ColorDark grey with White Silk Screening
Unit Weight without batteries2.15 ounces (60 grams)
Unit Weight with batteries2.95 ounces (85 grams)
Dimensions (H x W x D)1.8" (46 mm) x 4" (102 mm) x 0.75" (19 mm)
Shipping Weight8 ounces (227 grams)
In The Box

In The Box

  • (1) LR-42 IR Stethoscope 4-Channel Receiver
  • (1) LA-152 IR Receiver Battery Compartment (Non-Charging)
  • (1) Quick Reference Card
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