Df has heart failure which is getting worsr and is carer for stepmum who has dementia. We're trying(me+step sister) to persuade him to let dsm to go in respite to give him a break but he won't at mo. We're concerned that if he became seriously unwell she would be unaware so are thinking of getting him alarm pendant so he could call for help-he has a mobile but doesn't carry it on him round house or garden. Have looked at suresafe but am wondering which ones people have found good.