Britton Flag Ampetronic Audio Solutions for the UK

Z-LA-141 Expansion Radiators

The Z-LA-141 infrared expansion radiator is part of the most advanced low cost infrared solution.

The Z-LA-141 infrared expansion radiator is part of the most advanced low cost infrared solution.

The Z-LA-141 can be combined with the Z-LT-84 Transmitter/Radiator Combo for additional coverage of up to 30,000 ft² (2787 m²) with Z-LR-4200-IR/Z-LR-5200-IR receivers or 7,500 ft² (697 m²) with Z-LR-42/Z-LR-44 receivers in single channel mode, when mounted within 100 ft. (30.48 m) of cable length from the Z-LT-84. Up to four (4) Expansion Radiators (Z-LA-141) can be daisy chained to an Z-LT-84 system.

A single CAT-5e cable carries both power and signal to the Expansion Radiators (Z-LA-141) making it a true one-cable connection. Placing additional Expansion Radiators (Z-LA-141) in the same room increases the overall coverage area and enhances the freedom of movement within the room. The included mounting hardware allows the Z-LA-141 to be easily mounted to the wall, ceiling or table.

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  • Use up to four Z-LA-141 to expand the coverage area.
  • The only product of its kind that provides complete, gap-less coverage in small-to-medium spaces.
  • Easy installation with included mounting hardware and single Cat-5e cable for power and audio signal.


  • Assistive listening
  • Language interpretation
  • Live theatre
  • Houses of worship
  • Courtrooms
  • Secure rooms

Standards Compliance

StandardsFCC Part 15, ICS-03, CE, RoHS, WEEE



System Frequency Response63 Hz - 15 kHz (+/- 3 dB) System Specification (wireless end-to-end with LR-44)
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)


Indicator Lights On/Off SwitchTwo (2) position switch - Indicator Lights OFF, Indicator Lights ON
Delay CompensationFour (4) position rotary switch setting (0, 1, 2, 3)


RJ-45 Amber LEDSolid Amber indicates carrier is present and IR is being transmitted
RJ-45 Green LEDSolid Green indicates power is applied to unit


Expansion Link OutputOne (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)
Carrier Frequencies2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz
Expansion Link InputOne (1) RJ-45 connector - Receives RF Signal and Power from LT-84
Power Save ModeCarrier will shut off when no audio is present for 15 minutes on both channels to preserve radiator life.
Number of ChannelsTwo (2) channels


Coverage Area30,000 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 Power1.49 W


Power Supply12 VDC, Provided via LT-84 Expansion Link Output RJ-45s
Current Draw600 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


Shipping Weight3.0 lbs. (1.4 kg)
Dimensions (H x W x D)1.5 x 10.7 x 4.1 in. (3.81 x 27.2 x 10.5 cm)
MountingCan 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.
Unit Weight0.6 lbs. (0.3 kg)
ColorBlack with White Silk Screening


Temperature - Operation14 °F (-10 °C) to +104 °F (40 °C)
Temperature - Storage-4 °F (-20 °C) to +122 °F (50 °C)
Relative Humidity0 to 95% relative humidity, non-condensing


StandardsFCC Part 15, ICS-03, CE, UL, CUL, C-Tick, CCC, PSE, KC, GS, RoHS, WEEE


Ampetronic are pleased to announce that we will be offering the award winning new WiFi Audio streaming system.
The class leading performance of the new iDSP Infrared System really is the sum of its outstanding parts!
Assistive Listening Systems are a special type of sound system designed specifically to help people with hearing loss access audio services in public places by connecting them directly.
Ampetronic are world leaders in the design and manufacture of assistive listening systems and audio solutions.