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Listen Technologies LR-42 infrared stethoset receiver

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This 4-channel infrared stethoset receiver uses standard AAA alkaline batteries for 30 hours of use, or a NiMH rechargeable battery pack that delivers 15 hours of use per charge. The LR-42 also features an auto shut-off after 30 minutes with no signal.

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General Description

The Listen Technologies LR-42 is a 4-channel infrared stethoset receiver. It uses standard AAA alkaline batteries for 30 hours of use, or a NiMH rechargeable battery pack that delivers 15 hours of use per charge. The LR-42 also features an auto shut-off after 30 minutes with no signal.

The wireless stethoset design is a one piece device so there are no cables that can be tangled/damaged. This lightweight yet robust receiver is comfortable to use for even long events.

Ideal for audio description, hearing assistance or simultaneous interpretation.

Features

Secure wireless communication
Lightweight and comfortable design
Easy to use and maintain
Receives up to four channels mono or stereo
Ear buds can be easily cleaned or replaced
Cable free

Delivery Includes

1 LR-42 4-channel infrared stethoset receiver
LA-152 infrared Receiver Battery Compartment (Non-Charging)

Technical Data

Carrier Frequencies: 2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz
Number of Channels: Four selectable channels
IR Detectors: Two detectors under front IR lens
Sensitivity: One nW/cm2 at 40 db SNR
Frequency Accuracy: +/- .005% stability 0 to 50C
Squelch: Automatic on loss of RF signal (40 db SNR)
System: Frequency Response 63Hz - 15kHz (+/- 3dB)
System Signal to Noise Ratio (A-weighted): Mono: >60dB Stereo: >52dB
System Distortion: <2% total harmonic distortion (THD)
Audio Output Power    : 20 mW maximum at 32 ohms
User Controls: Volume, Power, Channel Select
Programming: Channel Lock, Auto Seek, Channel Lock-Out, Squelch
Unit Power: Indicated by current channel selection LED
Channel Selection: Red LED illuminates on the current channel selection
Battery Type: Two AAA alkaline batteries or NiMH battery pack
Battery Life: 30 hours alkaline, 15 hours NiMH rechargeable pack
Battery Charging: Up to 9 hours, fully Automatic with NiMH battery pack
Stethoscope Arm length: 203mm
Colour: Dark Grey with White Silk Screening
Temperature – Operation: 14 ˚F (-10 ˚C) to 104 ˚F (+40 ˚C)
Temperature – Storage: -4 ˚F (-20 ˚C) to (122 ˚F)
Humidity: 0 to 95% relative humidity, non-condensing
Unit Weight without batteries: 60g
Unit Weight with batteries: 85g
Dimensions: (H x W x D) 46 x 102 x 19mm

More Information
ManufacturerListen Technologies

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