My mother in law had one but it wasn't life alert. It was quite a few years ago so I can't rememebr what company it was. It was through our senior program at our local hospital. But it was nice. She wore the pendant and if she punched it they would determine whether it was a problem for a 911 call or something a family member could take care of. And believe me they said some of the calls were just things that they just wanted a family memebr there! They have a list of people, don't have to be family, to call 1st, 2nd, etc. She did use it twice for emergency calls.