LKS-8-A1 ListenTALK Portable ADA Kit 2
Furnish a portable assistive listening system for use by the hearing-impaired. The system shall be capable of operating on the 1.9 GHz unlicensed PCS band utilizing Frequency-Hopping Spread Spectrum (FHSS) techniques allowing interference free one way communication. The devices shall employ a multiply layer security protocol consisting of a 40-bit (pin free) group subscription, 32-bit authentication and a 64-bit encryption scheme enabling secure audio. They shall be easy to pair and form groups via Near-field communication (NFC), Docking Station or Software Suite. The system devices shall be simple to operate with a Power and Volume Up and Down buttons. The devices shall allow up to 10 simultaneous groups to operate in the same area. They shall be powered via a removable non-proprietary rechargeable lithium-ion battery or via an optional 3 AAA alkaline battery compartment.
The system devices shall have a 3.5 mm TRRS CTIA compliant headset connection allowing use with personal ear buds. They shall have a 64 x 128 OLED display with auto diming allowing display of all current status (group name, volume levels, battery status, time remaining, signal strength, unit ID, etc.) The leader/presenter device shall have a leader clip and when inserted the unit automatically designates itself as a leader and allows the leader/presenter to control pairing/group creation.
The system devices shall have a signal-to-noise ratio of 70 dB or greater and shall have an audio frequency response of 40 Hz – 15 kHz (±3 dB). The devices shall incorporate automatic battery charging circuitry to charge and maintain the lithium-Ion battery either via the micro USB port or via the docking station using the additional charging contacts on the bottom of the devices.
The LKS-8-A1 ListenTALK Portable ADA Kit 2 is specified.