FutureCall FC-1007 can be a pretty good choice. It has big buttons that you can place pictures of family members on, so the elderly can easily operate it. It rings and also has bright LED lights so it's perfect for seniors with hearing loss.
The specific features of the FutureCall FC-1007 phone are:
- Pictures can be added to each button
- High/Low/Off ringer volume
- Visual signal on incoming calls by bright LED lights
- Red 911 emergency button (replacable with another number)