WIR TX90 DC Large area multi-channel infrared transmitter

Our Part Number: WIR TX90 DC

Energy-efficient WIR TX90 DC emitter -- now featuring a DC power supply.  Improved range - up to 30,000 square feet!

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List Price: $1699.00


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The powerful four-channel WIR TX90 DC transmitter combines modulator and emitter technology into a single operating unit, which reduces operating costs, eliminates the need for rack space and eases set-up.  The WIR TX90 DC features application pre-set controls for music, voice or hearing assistance applications – no guesswork required for audio configuration. Everything you need for installation is in the box. 

The powerful emitter produces a wide-angle infrared signal that concentrates IR energy efficiently in the listening area. Operating on the 2.3-3.8 MHz bandwidth, the emitter is less susceptible to radio and lighting interference. Each emitter can cover up to 30,000 sq. feet (2,787 sq. meters) in single-channel operation. The coverage area can be easily increased by daisy-chaining additional WIR TX9 DC emitters. 

System Includes

(1) WIR TX90 DC  Transmitter
(1) TFP 053  Power supply
(1) WCA 123  50’ DC power extension cable
(1) BKT 024  Wall/ceiling mount
(1) IDP 008  ADA wall plaque
  • Now with improved range - up to 30,000 sq ft
  • Elimination of wall-mount power supply
  • Fully compatible with previous generations


Dimension, Weight11.25” W x 6.25” H x 2.125” D (28.6 cm x 15.9 cm x 5.4 cm), 1.8 lbs (0.8 kg)
ColorBlack with white legends, black acrylic lens (optional white enclosure available)
Power Supply

Desktop-style, universal power supply.  

Input: 100-240 VAC, 50/60 Hz, 0.6 A.  Line cord specified by country of use.

Output: 24 VDC, 1.0 A, 25 W.  Barrel connector.

50 ft DC power supply extension cable available (WCA 123)

ModulationFM Wideband, +50 kHz deviation max., 50 uS pre-emphasis
Carrier FrequencyChannel A: Selectable, 2.3/3.3 MHz,
Channel B: Selectable, 2.8/3.8 MHz
Emitter IR Power3.5 W
Coverage Area

30,000 sq. ft. (2,787 sq. m) in single channel mode when using the RX22-4 Receiver

19,000 sq. ft (1,765 sq. m) in two channel mode when using the RX22-4 Receiver

11,000 sq. ft (1,022 sq. m) in four channel mode when using the RX22-4 Receiver

3,350 sq. ft (311 sq. m) in single channel mode when using the RX18 Receiver

Signal-to-Noise Ratio>75 dB, +3 dB
Frequency Response80 to 15,000 Hz, electrical response
Total Harmonic DistortionLess than 0.2%, electrical response at 1 kHz
CompressionMusic preset  1:1, Voice preset  1.5:1, Hearing Assist preset 2:1
Auto Carrier Shut-Off20 minute timer shuts off carrier when no audio is present
Power IndicatorRed LED
Audio Volume Level ControlsCH A and CH B Input Level, press to select, 28 dB adjustable range
Audio IndicatorsCH A and CH B Audio Level, yellow LED, flash
Carrier LEDs2 green LED carrier “on” indicators
Phone Output3.5mm TRS headphone jack. CH A tip, CH B ring on jack, 32 ohm headphone (min)
Application PresetMusic, Voice, Hearing Assist.  Frequency response;  Music: Flat;  Voice: Mid-range boost;  Hearing Assist: High frequency boost
Tone ControlPress to select, 21 dB adjustable range (1 kHz between low boost/hi-cut and low cut/hi boost)
Power Input24 VDC, 0.8 A, 25 W
Audio Input ConnectorCH A and CH  B, 3 wire Phoenix
Input LevelBalanced or unbalanced, 316 mVRMS (-10 dBV) nominal, 5.7 k Ω input impedance; max input (over volume range) -21 to +7 dBV
Baseband OutputBNC, 50 Ω, for use with TX9 or TX9 DC only
Baseband CableRG 58 Coax, BNC connectors, maximum 1000 ft. (300 m) length
Operating Requirements0-50º C (+32 °F to 122 °F) ambient temperature, non-condensing, non-corrosive atmosphere
Mounting KitsWall or Ceiling Mount: BKT 024 Omnidirectional mount;
Optional:  Tripod Stands: SS-11 or SS-6
Warranty5 years on transmitter  (90 days on accessories)
ApprovalsCE, FCC, RoHS, WEEE
Compatible Recievers

WIR RX22-4 Four-Channel Receiver

WIR RX18 Two-Channel Receiver

NotesSpecifications: Single end input, volume & tone controls at mid point, 1 kHz, “Music” Preset

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