The LA-141 Expansion Radiator (Pat. 9,712,246) from Listen Technologies expands on the functionality and coverage area of the LT-84 Infrared Transmitter/Radiator combo system, giving users and clients an uninterrupted, high-performance listening experience.
Up to four (4) LA-141 Expansion Radiators can be added to the LT-84 system, providing additional coverage up to 2,787 m2 (30,000 ft2) with LR-4200-IR/LR-5200-IR receivers or 697 m2 (7,500 ft2) with LR-42/LR-44 receivers in single-channel mode. A single CAT-5e cable provides both power and signal to the radiators, and the included mounting hardware and single-cable design make installation and setup a breeze.
One (1) LA-141 ListenIR Expansion Radiator
One (1) 25 ft. (7.6 m) CAT-5e Cable
One (1) LA-344 Flexible Mounting Hardware
One (1) Quick Start Guide
| System Distortion | < 2% (THD) System Specification (wireless end-to-end with LR-44) |
| System Signal to Noise Ratio (A-Weighted) | > 60 dB (SNR) System Specification (wireless end-to-end with LR-44) |
| System Frequency Response | 63 Hz - 15 kHz (+/- 3 dB) System Specification (wireless end-to-end with LR-44) |
| Indicator Lights On/Off Switch | Two (2) position switch - Indicator Lights OFF, Indicator Lights ON |
| Delay Compensation | Four (4) position rotary switch setting (0, 1, 2, 3) |
| RJ-45 Amber LED | Solid Amber indicates carrier is present and IR is being transmitted |
| RJ-45 Green LED | Solid Green indicates power is applied to unit |
| Carrier Frequencies | 2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz |
| Number of Channels | Two (2) channels |
| Power Save Mode | Carrier will shut off when no audio is present for 15 minutes on both channels to preserve radiator life. |
| Expansion Link Output | One (1) RJ-45 connector - Provides RF Signal and Power to one additional LA-141.CAT-5e cable 24 AWG, 100 ft. (30 m) maximum cable length, two (2) LA-141s per daisy chain (total daisy chain cannot extend beyond two expansion radiators) |
| Expansion Link Input | One (1) RJ-45 connector - Receives RF Signal and Power from LT-84 |
| Coverage Area | 30,000 ft² (2787 m²) single channel with LR-4200-IR/LR-5200-IR receivers or 7,500 ft² (697 m²) single channel with LR-42/LR-44 receivers |
| IR Emitter Power | 1.49 W |
| Power Supply | 12 VDC, Provided via LT-84 Expansion Link Output RJ-45s |
| Current Draw | 600 mA per LA-141, maximum of two (2) LA-141s daisy chained with CAT-5e cable 24 AWG 100 ft. (30 m) to each LT-84 Expansion Link Output |
| Color | Black with White Silk Screening |
| Shipping Weight | 3.0 lbs. (1.4 kg) |
| Mounting | Can be mounted on a wall, ceiling, or table with provided hardware (screws and hollow wall anchors not provided). Optional LA-347 Wall Box Mounting Plate is available for mounting to a standard single gang electrical box. |
| Dimensions (H x W x D) | 1.5 x 10.7 x 4.1 in. (3.81 x 27.2 x 10.5 cm) |
| Unit Weight | 0.6 lbs. (0.3 kg) |
| Temperature - Operation | 14 °F (-10 °C) to +104 °F (40 °C) |
| Temperature - Storage | -4 °F (-20 °C) to +122 °F (50 °C) |
| Relative Humidity | 0 to 95% relative humidity, non-condensing |
| Standards | FCC Part 15, ICS-03, CE, UL, CUL, C-Tick, CCC, PSE, KC, GS, RoHS, WEEE |
14912 Heritage Crest Way
Bluffdale, Utah
84065-4818 USA
Phone: +1.801.233.8992
Toll-Free: 1.800.330.0891
Office Hours
8:00 am – 5:00 pm MT
Monday – Friday
