The LR-4200-IR offers precise infrared audio reception with four selectable channels, an OLED display, and rechargeable lithium-ion battery for up to 8 hours of use.
The Listen Technologies LR-4200-IR Intelligent DSP Infrared Receiver is engineered to deliver clear, high-fidelity audio in infrared assisted listening environments. It supports four selectable carrier frequencies—2.3, 2.8, 3.3, and 3.8 MHz—with exceptional frequency accuracy of ±0.005%, ensuring stable and reliable reception. The receiver features a frequency response range from 63 Hz to 15 kHz (±3 dB) and maintains distortion below 2% Total Harmonic Distortion at 80% deviation, providing crisp sound quality.
Equipped with dual 3.5 mm unbalanced audio output jacks, the LR-4200-IR accommodates both mono and stereo plugs, delivering up to 16 mW output power at 32 Ohms impedance. User controls include power on/off and volume adjustment, with channel selection accessed by holding volume buttons. The OLED display clearly indicates channel, battery level, unit number, charging, and volume status. Additional features include programmable squelch, power-saving mode, and LED indicators for battery status.
Powered by a rechargeable lithium-ion battery, this compact receiver offers approximately 8 hours of operation and charges fully in 2.5 hours via micro-USB. Its durable flat black housing measures 3.75 x 2 x 0.64 inches and operates reliably in temperatures from 14 to 104°F with humidity tolerance up to 95% non-condensing.
- Four selectable carrier frequencies: 2.3, 2.8, 3.3, and 3.8 MHz
- Frequency response: 63 Hz to 15 kHz (±3 dB)
- Dual 3.5 mm unbalanced audio output jacks for mono or stereo
- OLED display shows channel, battery, unit, charging, and volume status
- Rechargeable lithium-ion battery with 8 hours typical use and 2.5-hour charge
- Programmable squelch and automatic power save mode
- Compact size: 3.75 x 2 x 0.64 inches; weight: 1.9 oz without batteries
- Operates in 14 to 104°F and up to 95% non-condensing humidity
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