Listen Technologies, ListenIR 2-Channel Transmitter/Radiator Combo

Audio
Frequency Response: 20 Hz – 20 kHz (+/- 1 dB) Line Input, 63 Hz – 15 kHz (+/- 3 dB) System Specification (wireless end-to-end with LR-4200)
Signal-to-Noise Ratio: > 70 dB (SNR) Line Input, > 60 dB (SNR) System Specification (wireless end-toend with LR-4200)
Microphone Input: Two (2) 3.5 mm (0.14 in.) Tip/Sleeve connector, -30 dBu nominal input, +14 dB headroom, impedance 4.4k Ohms, 5 VDC bias supply
Total Harmonic Distortion: < 0.1% (THD) Line Input, < 2% (THD) System Specification (wireless end-toend with LR-4200)
Unbalanced Line Input: Stereo/Mono Input. Two (2) Dual (RCA) Phono connectors, unbalanced, -10 dBu nominal input, +14 dB headroom, impedance 10k Ohms
Balanced Line Input: Mono Input. Two (2) Phoenix Type connector, balanced, + 4 dBu nominal input, +14 dB headroom, impedance 100k Ohms

Controls
Power Switch: Three (3) position switch – Power OFF, Power ON-Indicator Lights OFF, Power ON-Indicator Lights ON
Carrier Frequency Selection: Two (2), four (4) position rotary switches (2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz)
Level Control Knob: Two (2) audio taper rotary potentiometer, counter-clockwise decreases input mix level, clockwise increases input mix level

Indicators
Power Supply LED: Green LED on in-line power supply indicates AC power is applied
Audio Level Indicators: Two (2) Green LEDs, two (2) Red LEDs, Green LED indicates Audio presence and Red LED indicates peaks in the audio
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, flashing indicates unit has entered power save mode

RF
Carrier Frequencies: 2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz, Selectable
Number of Channels: Two (2) channels, Selectable carrier frequency
Frequency Accuracy: +/- .005% stability 0 to 50 °C
Transmitter Stability: 50 PPM
Modulation: FM Wideband, ±50kHz deviation max, 50 ?S pre-emphasis
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: Two (2) RJ-45 connectors – Provides RF Signal and Power, CAT-5e cable 24 AWG, 100 ft. maximum cable length, two (2) LA-141s per output connector

IR
Coverage Area: 2,787 m² (30,000 ft²) single channel with LR-4200-IR/LR-5200-IR receivers or 697 m² (7,500 ft²) single channel with LR-42/LR-44 receivers
IR Emitter Power: 1.49 W

Power
Power Supply Input: 100-240 VAC, 50-60 Hz
Power Supply Output: 12 VDC, 4 A, 48 W
Power Supply Connector: 2.5 mm ID barrel connector, center positive
Power Output: Two (2) RJ-45 connectors. providing Power and RF signal for up to two (2) LA-141 expansion radiators on each output
Power Supply Type: In-line switching mode power supply, Listen part number LA-210

Physical
Color: Black with White Silk Screening
Unit Weight with Power Supply: 1.8 lbs. (0.8 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: 0.8 lbs. (0.4 kg)

1 stk. ListenIR 2-Channel Transmitter/Radiator Combo
1 stk. 12 VDC Universal Power Supply/Power Cord
1 stk. Flexible Mounting Hardware
2 stk. Phoenix Type Connectors
1 stk. Multi-Lingual Assistive Listening Notification Sign
1 stk. Quick Start Guide