We want to offer our condolences in the death of your grandfather.
Though we are a non-commercial site (and will ban those who use the forums for advertising), if we see something that might help somebody, we'll be glad to let you know. So, this is NOT a product endorsement. But you may want to check LifelineSystems.com or 1-800-LIFELINE. I'm sure there are many other providers out there with similar product lines, but this is one that we know of. They have been in business for a long while and have extensive services.
I hope this helps.
Comments anyone? Anyone have any experience with them?