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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 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.

For more information on Ampetronic ListenIR contact our expert team on: +44 (0) 1636 610062 or email: sales@ampetronic.co

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  • Features
  • Applications
  • Accessories
  • Standards
  • Specification
  • Downloads
    • 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
    • Z-LA-423-03 4 Port USB Charger (for LR-4200/LR-5200) (EU)
    • Z-LA-381-03 Intelligent 12 Unit Charging Tray (for LR-4200/5200)-EU
    • Z-LA-484 Road Case 16
    • Z-LA-434 Earphone Extension Cable
    • Z-CW Cleaning Wipes
    • Z-LA-151 Replacement Eartips (for LR-42) (Qty: 20)
    • Z-LA-152 Replacement IR Alkaline Battery Compartment (for LR-42) (Non-Charging)
    • Z-LA-163 Replacement Cushions (for LA-404/LA-405) (Qty: 20)
    • Z-LA-164 Universal Ear Speaker (92 cm length)
    • Z-LA-204-02 7.5 VDC Replacement Power Supply (for LA-350)
    • Z-LA-205-02 30 VDC Replacement/Extension Power Supply (for LT-82/LA-140)
    • Z-LA-205-03 30 VDC Replacement/Extension Power Supply (for LT-82/LA-140) – EU
    • Z-LA-209-02 5 VDC Intelligent 12-Unit Charging Tray Replacement Power Supply (for LA-380/LA-381)
    • Z-LA-210-02 12 VDC Replacement Power Supply (for LT-84)
    • Z-LA-262 Over-the-head Microphone
    • Z-LA-270 Noise Canceling Microphone
    • Z-LA-277 Conference Microphone
    • Z-LA-303 Multi-Lingual Assistive Listening Notification Sign
    • Z-LA-304 Assistive Listening Notification Signage Kit
    • Z-LA-330 Portable Unit Lanyard
    • Z-LA-338 Tabletop Tripod (for LT-84/LA-141)
    • Z-LA-342 Stationary IR Dual Radiator Mounting Bracket (for LA-140)
    • Z-LA-343 Kensington Safety-Security Cable (for LT-84/LA-141)
    • Z-LA-344 Replacement Mounting Hardware (for LT-84/LA-141)
    • Z-LA-346 Portable IR System Carrying Case
    • Z-LA-347-GY Wall Box Mounting Plate-Gray (for LT-84/LA-141)
    • Z-LA-347-WH Wall Box Mounting Plate-White (for LT-84/LA-141)
    • Z-LA-350-02 8 Unit IR Charging/Storage Station (for LR-42)
    • Z-LA-351 8 Unit IR Storage Station (for LR-42)
    • Z-LA-361 High Capacity AA Alkaline Batteries (2)
    • Z-LA-362 Rechargable AA NiMH Batteries (2)
    • Z-LA-363 High Capacity AAA Alkaline Battery (for LR-42)
    • Z-LA-364 NIMH Rechargeable Battery Pack (for LR-42)
    • Z-LA-365 Replacement Battery (for LR-4200/LR-5200)
    • Z-LA-380-02 Intelligent 12 Unit Charging/Carrying Case (for LR-4200/LR-5200)
    • Z-LA-380-03 Intelligent 12 Unit Charging/Carrying Case (for LR-4200/LR-5200) EU
    • Z-LA-381-02 Intelligent 12 Unit Charging Tray (for LR-4200/5200)
    • Z-LA-382 Intelligent Cable Management Unit (for LA-381)
    • Z-LA-401 Universal Ear Speaker
    • Z-LA-402 Universal Stereo Headphones
    • Z-LA-403 Universal Behind-the-Head Stereo Headphones
    • Z-LA-404 Universal Single Ear Bud
    • Z-LA-405 Universal Stereo Ear Buds
    • Z-LA-422 USB to Micro USB Cable (for LR-4200/LR-5200)
    • Z-LA-423-02 4 Port USB Charger (for LR-4200/LR-5200)
    • Z-LA-430 Ear Phone/Neck Loop Lanyard (for LR-4200/LR-5200)
    • Z-LA-431 Intelligent Replacement Belt Clip (for LR-4200/5200)
    • Z-LA-432 Replacement Leatherette Cushions (for LA-402) (Qty:10)
    • Z-LPT-A117 Remote Power Supply Kit (for LT-84)
    • Z-LS-88-02 Portable ListenIR iDSP System
  • FCC Part 15, ICS-03, CE, RoHS, WEEE

  • Audio

    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

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