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Stationary IR Radiator – LA-140-GY

Listen Technologies

Combining a compact, stylish design with outstanding coverage and simple setup, the LA-140 IR Radiator/Emitter from Listen Technologies is an expandable option for any infrared assistive listening application.

Two LA-140 units can be mounted together horizontally or vertically, doubling the power of your system without taking up an excessive amount of space. Additionally, two units can be powered by a single LT-82 transmitter or optional power supply with standard CAT-5 cable, making setup and installation simple.

Each unit includes hardware for mounting on wall, ceiling, desk, mic stand or tripod, making the LA-140 an incredibly versatile choice for nearly any IR assistive listening system.

With a compact design and availability in either white or grey, the LA-140 IR Radiator/Emitter from Listen Technologies is a discreet and dependable choice.


$774.00 $860.00

Stationary IR Radiator – LA-140-GY

SKU: LA-140-GY Categories: , , Tags: ,
Weight 6.00 lbs
Dimensions 2.60 × 8.00 × 5.50 in

Listen Technologies


User Controls Termination Switch, Delay Compensation Switch, Indicator LEDs on/off, Compatibility Switch


Red LED Indicates power is present.
Yellow LED Indicates no connection to transmitter or radiator.
Green LED Indicates carrier and power are present and radiator is emitting IR signal.


Frequency Range 1 MHz – 5 MHz
Input/s BNC Connection. -25 dBm to -5 dBm input nominal
Output/s BNC Connection. -15 dBu nominal
Coverage Area 10,000 ft² (929 m²) when used with Listen Receivers


Power Supply Input RJ-45 connector. 30 VDC, powered from transmitter via CAT-5 cable or optional LA-205 power supply.
Power Supply Output RJ-45 connector. 30 VDC, powers up to one additional radiator. (Maximum two radiators powered from each LT-82 transmitter or LA-205 power supply)
Emitter Power 3 W
Cable Length 250 ft. with (1) LT-82 and (2) LA-140 or 700 ft. with (1) LT-82 and (1) LA-140.


Width 8.00 in. (203 mm)
Height 5.50 in. (140 mm)
Depth 2.60 in. (66 mm)
Color LA-140-GY (Grey), LA-140-WH (White)
Shipping Weight 6.0 lbs. (2.70 kg)
Mounting Radiator can be mounted on a wall, on a ceiling, in a corner, on a desk, on a mic stand or on a tripod. Wall box mounting plate fits a standard single gang electrical box.
Weight 2.1 lbs. (0.95 kg)
Weight (Loaded) 2.4 lbs. (1.09 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, Industry Canada, CE, RoHS

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