The Serene HD-40S Outgoing Speech Amplified Telephone W/ Photo Memory Speed Dial offers outgoing voice amplification up to 40dB and incoming voice amplification up to 18dB. This phone is designed for those with speech loss and mild to moderate hearing loss.
One year warranty
Incoming Speech Amplification: 0 to 18 dB
Out-Going Speech Amplification: 0 to 40 dB (note HD-40S can only be used either
as an incoming or outgoing speech amplify phone - but not both at the same time).
Battery backup supports full amplification and all functions during AC power outage.
Hearing Aid Compatible Receiver: Yes
Ringer Loudness: Hi – Mid – Low (95 dB max)
Ringer Tone: Low – High
Ring Flasher: Yes (front and side)
Auto-Amplify Switch (Auto-Reset Switch): Yes
Photo Memory Buttons: 9
Dialing Method: Tone / Pulse
Redial, Flash, Pause Keys: Yes
9 vdc, 300 ma power adapter
Optional 4 AA size alkaline batteries backup supports full amplification and all
functions during AC power outage.
HD-40S function as a simple phone if no battery or AC adapter are available
Handset Size: 8.2” x 2.0” x 1.9”
Base Size: 9.0” x 7.4” x 2.5”
Handset Weight: 6 oz.
Base Weight: 21 oz.
Operating: 0 to 30°C
Storage: -10 to 40°C