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.
| Carrier Frequencies | Selectable: 2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz |
|---|---|
| Number of Channels | 4 selectable channels |
| IR Detectors | 2 detectors under front IR lens |
| Sensitivity | 1 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) | >58dB |
| System Distortion | |
| Audio Output Jacks | 3.5 mm connector unbalanced, mono or stereo headphones |
| Audio Output Power | 20 mW maximum at 32 ohms |
| User Controls | Volume, Power, Channel Select |
| Programming | Channel Lock, Auto Find, Auto Seek, Auto Shut-Off,Audible Option |
| Unit Power | Inicated by current channel selection LED |
| Channel Selection | Red LED illuminates on the current channel selection |
| Audible Indicator | Audio beep in headset indicates low batteries, channel lock, power on/off |
| Power | Specifications |
| Battery Type | Two AAA alkaline batteries or NiMH battery pack |
| Battery Life | 30 hours alkaline, 15 hours NiMH rechargeable pack(LA-364) |
| Battery Charging | Fully Automatic with NiMH battery pack and LA-350 charger |
| Temperature - Operation | -10 C (14 F) to +40 (104 F) |
| Temperature - Storage | -20 C (-4 F) to +50 (122 F) |
| Humidity | 0 to 95% relative humidity, non-condensing |
| Color | Dark grey with White Silk Screening |
| Unit Weight without batteries | 2.15 ounces (60 grams) |
| Unit Weight with batteries | 2.95 ounces (85 grams) |
| Dimensions (H x W x D) | 1.8" (46 mm) x 4" (102 mm) x 0.75" (19 mm) |
| Shipping Weight | 8 ounces (227 grams) |
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
