Assisted Listening (Infra-Red) Systems ADS/Signet

Infra-Red Listening Systems

This technology uses modulated, invisible infra-red light to connect the sound source and the listener. Listeners wearing hearing aids may switch them to the 'T' position and wear a neck loop with built-in receiver to hear the signal. 

Alternatively listeners may wear a stethoset headset or lanyard with a built-in receiver. If using the lanyard, the listener can plug in their own preferred headset, using the jack socket on the lanyard.

• Simple to understand and install range of products for all types of installation
• All transmitters supplied complete with Power Supply Unit and Mounting Bracket (Brackets supplied are suitable for wall or ceiling mounting)
• All transmitters designed for portable use
• (IRT-45 can be placed on any flat surface (such as a table top). IRT-270 and IRT-730 can be tripod mounted using the 1/4" threaded mounting hole provided - photographic tripod not supplied)
• Choice of 3 receivers to cater for all user requirements (Receivers can be used with transmitters not supplied by ADSworldwide) 
• All battery chargers supplied complete with Power Supply Unit

Useful aspects of this technology include

• no complicated cable installation (no physical room loop required)
• no interference from building construction
  (signal not affected by cabling, pipework, etc. in the building) 
  
• transmitted information remains secure
  (no signal overspill into adjacent rooms)
  
• can transmit several different sound sources
  (for example, simultaneous language translation at conferences)
  
• can transmit to individuals where people are met in groups
  (for example, for museum visitors to each receive individual commentaries)
  
• can be used in noisy environments where staff have to wear ear defenders
  (PA announcements can be transmitted to the wearers of ear defenders)
  
  Please contact us regarding our complete range infra-red systems to assist the hearing impaired, including ancillary products.
  
  Our systems are designed for use in the home, at reception and counter areas, for committee and conference venues, in churches, schools, halls, leisure centres and in other larger complexes.

Other features of the Infra-Red Systems include

• Larger coverage area at lower cost
• Design flexibility using multiple channel modulators
• Simple bracket method for multiple units to be arrayed together
• Wide variety of input sources accepted as standard
• Multilingual capabilities
• Energy saving mode
• Variety of charging options

IRT-45 Small Room Infra-Red Listening System Transmitter.

• Designed for rooms up to 45m² with typical elliptical emission pattern covering 9m x 5m.
• With the mounting bracket removed, the unit can be placed on any flat surface for portable use.
• The transmitter is used with suitable receiver modules to be purchased separately.  
• The unit can charge 1 receiver module type IRR-NL23 InfraLight or IRR-ST95 AudioLink II (not included) and up to 2 battery cells type BAT-01 (not included).
• Click here to see the typical emission pattern for room coverage up to 45m² (9m x 5m).

RT-270 Medium Size Room Infra-Red Listening System Transmitter.

• Designed for rooms up to 270m² with typical elliptical emission pattern covering 23m x 15.4m.
• The unit is equipped with a ¼” threaded mounting hole and can be screwed to a photographic tripod stand for  portable use, or it can be wall-mounted with the supplied mounting bracket.
• The transmitter is used with suitable receiver modules to be purchased separately.
• Click here to see the typical emission pattern for room coverage up to 270m² (23m x 15m).
• Click here to see the IRT-270 stand-mounted.

IRT-730 Larger Venue Infra-Red Listening System Transmitter.

• Designed for rooms up to 730m² with typical elliptical emission pattern covering 38m x 24m.
• The unit is equipped with a ¼” threaded mounting hole and can be screwed to a photographic tripod stand for  portable use, or it can be wall-mounted with the supplied mounting bracket.
• The transmitter is used with suitable receiver modules to be purchased separately.
  
• Click here to see the typical emission pattern for room coverage up to 730m² (38m x 24m).
• Click here to see the IRT-730 stand-mounted.

IRT-730-R Repeater Panel.

• Designed for use with either the IRT-270 or the IRT-730 infra-red assisted listening transmitter to extend signal coverage up to 730m².
• The unit is equipped with a ¼” threaded mounting hole and can be screwed to a photographic tripod stand for  portable use, or it can be wall-mounted with the supplied mounting bracket.
• The transmitter is used with suitable receiver modules to be purchased separately.
• Click here to see the typical emission pattern.

IRR-NL23 InfraLight Neck Loop Receiver

• This small neck-loop receiver (2.3/2.8MHz High Band Frequency) can be used by anyone wearing a hearing aid with, for example, any of the ADSworldwide infra-red transmitter modules (IRT-45, IRT-270 or IRT-730). (The receiver can also be used with infra-red transmitters not supplied by ADSworldwide.) When a hearing aid is switched to the 'T' position the received signal can be heard through the hearing aid.
• The receiver can be placed directly into the receiver port of a BCH-03 or BCH-05 battery charger, or the battery cell can be removed and placed into the battery port of a BCH-03 or BCH-21 battery charger.
• The cells are environmentally-friendly Nickel Metal-hydride batteries (BAT-01), which in normal use will provide about 6 hours of continuous use per charge and have a life-expectancy up to 3 years.
• Normally an exhausted battery would be fully re-charged after an overnight charge in the battery charger.

IRR-NL95 AudioLink Neck Loop Receiver

• This small neck-loop receiver (95 kHz Low Band Frequency) can be used by anyone wearing a hearing aid with, for example, any of the ADSworldwide infra-red transmitter modules (IRT-45, IRT-270 or IRT-730). (The receiver can also be used with infra-red transmitters not supplied by ADSworldwide.) When a hearing aid is switched to the 'T' position the received signal can be heard through the hearing aid.
• The neck loop cable and receiver module are supplied as two items.  The loop plugs into the top of the receiver module via the mini jack plug on the end of the neck loop cable.
• The receiver uses two AAA batteries (supplied) inserted into the back of the unit.  Standard AAA rechargeable batteries and recharger can be used, supplied separately by ADSworldwide (BAT-02 and BCH-04).

IRR-NL28 AudioLink Neck Loop Receiver

• This small neck-loop receiver (2.3/2.8 MHz High Band Frequency) can be used by anyone wearing a hearing aid with, for example, any of the ADSworldwide infra-red transmitter modules (IRT-45, IRT-270 or IRT-730). (The receiver can also be used with infra-red transmitters not supplied by ADSworldwide.) When a hearing aid is switched to the 'T' position the received signal can be heard through the hearing aid.
• The neck loop cable and receiver module are supplied as two items.  The loop plugs into the top of the receiver module via the mini jack plug on the end of the neck loop cable.
• The receiver uses two AAA batteries (supplied) inserted into the back of the unit.  Standard AAA rechargeable batteries and recharger can be used, supplied separately by ADSworldwide (BAT-02 and BCH-04).

IRR-ST95 AudioLink Stethoset Receiver

• This stethoset-style receiver (95 kHz Low Band Frequency) can be used, for example, with any of the ADSworldwide infra-red transmitter modules (IRT-45, IRT-270 or IRT-730) by the hearing impaired in environments where a hearing aid will not work successfully. (The receiver can also be used with infra-red transmitters not supplied by ADSworldwide.)
• The receiver can be placed directly into the receiver port of a BCH-03 or BCH-05 battery charger, or the battery cell can be removed and placed into the battery port of a BCH-03 or BCH-21 battery charger.
• The cells are environmentally-friendly Nickel Metal-hydride batteries (BAT-01), which in normal use will provide about 6 hours of continuous use per charge and have a life-expectancy of up to 3 years.
• Normally an exhausted battery would be fully re-charged after an overnight charge in the battery charger.

IRR-LAN952 Lanyard Receiver

• The IRR-LAN952 Lanyard Receiver (95/250 kHz Low Band Frequency) can be used to receive infra-red signals from, for example, any ADSworldwide infra-red transmitter module (IRT-45, IRT-270 or IRT-730). (The receiver can also be used with infra-red transmitters not supplied by ADSworldwide.)
• The IRR-LAN952 can be used in environments where magnetic signal interference precludes the use of normal hearing aids.  It can also be used by listeners not needing hearing aids, for personal listening.
• (Additionally the unit may be used as a test listening device for installations using neck loop receivers for the hearing impaired, so that an installer without hearing aids can test that the transmitter is functioning properly.)
• The unit has on-off/volume and tone controls and a 95KHz/250KHz (low band) selector switch.
• Standard audio headphones (not included) can be plugged into the integral 3.5mm jack socket on the IRR-LAN952.  This allows users to choose and use their own headphones best suited to their personal requirements.
• The Lanyard Receiver is powered by 2 AAA batteries (not included).  ADSworlwise can supply AAA batteries and a battery charger separately (BAT-02 and BCH-04).

TV-MIC Condenser TV Microphone

• For optimum audio quality of television sound the IRT-45 infra-red transmitter connects directly to the 'audio out' sockets of a television set (phono or scart) and the IRT-45 is then used in the normal manner.
• The condenser TV microphone is available for use with the IRT-45 and television sets without 'audio-out' sockets.
• The wired TV-MIC receives signals direct from the television's loudspeaker and feeds them into the jack (microphone) socket on the rear panel of the IRT-45.
• Click here to see a connection diagram.

BCH-03 Battery Charger 3 (including Power Supply Unit)

• This battery charger with PSU will charge 1 receiver module (IRR-NL23 or IRR-ST95) and up to 2 additional battery cells (BAT-01). 
• The receiver can be placed into the battery charger receiver port without removing its battery cell.  Battery cells can be placed into the battery charger battery ports.
• The cells are environmentally-friendly Nickel Metal-hydride batteries, which in normal use will provide about 6 hours of continuous use per charge and have a life-expectancy of up to 3 years.
• Normally an exhausted battery would be fully re-charged after an overnight charge in the battery charger.

BCH-04 Plug-in Battery Charger 4 for AA/AAA Rechargeable Batteries

• A direct 'plug into the mains' battery charger for up to 4 AA or AAA rechargeable batteries used in IRR-NL95, IRR-NL28 and IRR-LAN952
  more info
• A direct 'plug into the mains' battery charger for up to 4 AA or AAA rechargeable batteries used in IRR-NL95, IRR-NL28 and IRR-LAN952
• Special voltage monitoring (delta-V) prevents overcharging the batteries and the unit has a discharge function ensuring optimal battery condition.  There is an LED indication of the charge and discharge functions.

BCH-05 Battery Charger 5 (including Power Supply Unit)

• This battery charger with PSU will charge up to 5 receiver modules (IRR-NL23 or IRR-ST95). 
• The complete receivers can be placed into the battery charger receiver ports without removing their battery cells. 
• The cells are environmentally-friendly Nickel Metal-hydride batteries, which in normal use will provide about 6 hours of continuous use per charge and have a life-expectancy of up to 3 years.
• Normally an exhausted battery would be fully re-charged after an overnight charge in the battery charger.

BCH-21 Battery Charger 21 (including Power Supply Unit)

• This battery charger with PSU will charge up to 21 battery cells (BAT-01) in its 21 ports.  The cells must be removed from the units to which they supply power and placed directly into the battery charger.
• The cells are environmentally-friendly Nickel Metal-hydride batteries, which in normal use will provide about 6 hours of continuous use per charge and have a life-expectancy of up to 3 years.
• Normally an exhausted battery would be fully re-charged after an overnight charge in the battery charger.

BAT-01 Batteries for Infra-Red Assisted Listening System Receivers

• Battery Pack containing two NiMh battery cells for use in Infra-Red Assisted Listening System receivers IRR-NL23 or IRR-ST95.
• The cells are environmentally-friendly Nickel Metal-hydride batteries, which in normal use will provide about 6 hours of continuous use per charge and have a life-expectancy of up to 3 years.
• Normally an exhausted battery would be fully re-charged after an overnight charge in one of the battery chargers available separately (BCH-03 or BCH-21).
• The battery cell warranty period is 90 days.  A single NiMh battery cell is shown below.

BAT-02 Batteries for Infra-Red Assisted Listening System Receivers

• Two rechargeable AAA batteries for Infra Red Receivers IRR-NL95, IRR-NL28 and IRR-LAN952

The Disability Discrimination Act 1995 became law on October 1st 2004. The law makes it mandatory to provide a method of effective communication with those who are hearing impaired and use a hearing aid.

• An easy and secure method is by installing an Infra-Red Listening System.
• An economic method is by installing an Induction Loop System.