Thanks again quincy. Excellent advise. I've cleared my calendar to spend the day with mom tomorrow. I guess I'll refuse the equipment and not sign anything at this point.Stevef mentioned the statute of frauds, which requires that contracts that take over one year for completion must be in writing and signed. Your mother could refuse to sign a 3 year agreement. And your mother always has an option of refusing delivery and installation entirely - although this could potentially come with a penalty, depending on facts.
I am not sure an attorney is necessary unless/until the system is refused and the security system company kicks up a fuss - but it might be smart to contact a consumer protection clinic in Arizona anyway.
Do you live near your mom, Roger? Someone trustworthy should be with your mom when the Life Alert installer arrives.
I wasn't aware of consumer protection clinics, but will look for one today.