The Serene Innovations HD-40S HDS (High-Definition Sound) Technology makes even the weakest voice sharp, clear and easily audible, a new standard in SPEECH AMPLIFIED TELEPHONE TECHNOLOGY.

The HD-40S amplifies the OUT-GOING VOICE up to 40dB and the Incoming sound up to 18 Db.

The ALL NEW HD-40S features easy to use photo memory buttons for those who wish convenience of photo dialing.

FEATURES:

    * High-Definition Sound Technology for unmatched clarity, a new standard in amplified telephone technology

    * Amplifies out-going sound up to 40dB

    * Latest Digital Sound Processing technology eliminates virtually all distortion, echo effects and unwanted static, commonly found in other amplified phones

    * 9 large and easy to set up photo memory buttons for quick one touch dialing

    * Two (front and side) visual ring flashers that flash when the phone ring.

    * 95dB Super loud ringer with adjustable ringing volume and tone controls

    * battery backup for power outages (batteries not included)

    * Hearing aid compatible handset

    * One year warranty for manufacturer defect only

Product Specifications (PDF)

Suggested Test Method of Outgoing Voice (PDF)

User Manual (PDF)