HA-40 Hard of Hearing Amplifier
The HA-40 Hard of Hearing Amplifier allows you to control the volume on all mechanical and electronic sets.
- Amplifies volume more than 100 times the normal level
- Boost button provides extra amplification while blocking out feedback and background noise
- Tone selector amplifies selective speech clarity and distinction between similar words like "share" and "chair"
- Turns on automatically when the handset is lifted
- 9 volt battery included
- Low battery indicator
- Attaches to telephone without modifying case – attaches by a modular cord plugged into the handset of the telephone
- Compatible with multiline or singleline telephones