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Get your smaller venue started with assistive listening technology right away by installing the LS-47 Premiere Level I Stationary RF System. Complete with the 216 MHz version of our LR-400 Digital Display Receivers, the LS-47 provides listeners with a compact, convenient receiver that includes channel selection, battery level, and signal strength information shown right on the device screen.

The included LT-800-216 Stationary RF receiver and LA-102 telescoping provide excellent reception and signal clarity at a range of up to 228.6 m (750 ft.). Additionally, ear speakers, neck loops, alkaline batteries, and more are included to make getting started with assistive listening simple and fast.


One (1) LT-800-216-01 RF Transmitter (216 MHz)
One (1) LA-102 Telescoping Top Mounted Antenna (216 MHz)
Four (4) LR-400-216 Portable Display RF Receiver (216 MHz)
Four (4) LA-164 Ear Speaker
Two (2) LA-166 Neck Loop
One (1) LPT-A107-B Dual RCA to Dual RCA Cable 2 m (6.6 ft.)
Four (4) LA-361 High Capacity AA Alkaline Batteries (2)
One (1) LA-304 Assistive Listening Notification Signage Kit


  • Stationary transmitter and four (4) digital display receivers for the 216 MHz band included
  • Complete with signage, ear speakers, and more
  • Offers 57 digital channels to choose from
  • Digitally tuned receivers ensure reliable signal
Configurations & Architectural Specs


LS-47-216 Listen Premiere Level I Stationary RF System (216 MHz)
LS-47-072 Listen Premiere Level I Stationary RF System (72 MHz)

Architectural Specs

Furnish and install an RF wireless assistive listening system for use by the hearing-impaired. The assistive listening system (ALS) shall be capable of broadcasting on 17 wide band channels and 40 narrow band channels and be frequency agile. The ALS system shall have 80 dB SNR or greater, end-to-end. The RF receiver shall be capable of receiving on 57 wide and narrow band channels.The receiver shall have a SNR of 80 dB or greater. The device shall be able to be locked on a single channel. The receiver shall be capable of seeking channels. The unit shall incorporate a multi-functional LED that indicates power, channel lock, low battery, and battery charging. The device shall have a programmable squelch. The device shall have an audio frequency response of 50 Hz – 15 kHz (‘±3 dB) at 216 MHz. The device shall incorporate a stereo earphone jack that allows the user to plug in either a mono or stereo earphone(s). The device shall incorporate an LCD display that indicates channel, battery level, low battery, battery charging, RF signal strength and channel lock status. The device shall be able to enable companding with the SQ function. The unit shall operate off of two (2) AA batteries; alkaline or NiMH. The receiver shall incorporate automatic battery charging circuitry for recharging of NiMH batteries. The device shall have a switchable option for the use of alkaline or NiMH batteries. Listen Technologies Corporation LS-47-216 products are specified.

Product Specifications


Shipping Weight10.0 (4.5)
QWhat is the function of SQ?
ATo reduce noise of the systems, Listen offers a noise reduction technology called ListenSQ™. Both the transmitter and receiver must have SQ on to achieve the desired results. If you are planning to use this product with older Listen systems or equipment not manufactured by Listen, you should disable SQ.
QWhat is the difference between the LR-400 and the LR-500?
AThe LR-500 gives the user an opportunity to lockout unused channels and has the controls on the outside of the front door.
QCan the LR-400 be used with multiple transmitters?
AYes. The LR-400 can be used with multiple transmitters, but unlike the LR-500, it cannot be programmed to lock out channels.
QCan I purchase additional LR-400-216 receivers for my LS-47-216 system?
AYes! Order as many as needed. The additional receivers will need an earphone (LA-164) or any other Listen earphones and batteries before being used.
QWhat is the transmission range of the LS-47-216 system?
AUp to 750 ft. (228.6 m) with the included telescoping antenna (LA-102). For greater range up to 1,500 ft. (457.2 m) the universal antenna kit options found in the Level II and II Premiere systems.
QWhat is squelching?
AThe purpose of squelch is to mute the audio output of your receiver when the signal from the transmitter is turned off or is too weak to be received. Without squelch you would hear radio noise in your earphone. The squelch function is preset and cannot be changed on the LR-300.
QHow many receivers can I have in a system?
AAs many as you need, the number is endless.
QWhat are the ADA changes related to assistive listening systems?
ASimply put, any public assembly area where audible communication is integral to the use of the space, an assistive listening system shall be provided. The assistive listening receivers need to comply with the following table below. For full details visit:
QIs there a limit to the number of transmitters I can use in one room?
AYes. The 72 MHz LT-800-072 has a maximum of (8) eight.
Related Products

The wide variety of devices able to be used in conjunction with the LR-400 was very helpful. I tested LA-164 ear speaker, the LA-166 inductive neck look as well as one of the user's earbuds. Highly Recommended.

Doug Watt
Managing Director, Musiclab Brisbane
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