My aunt had one company that everytime she rolled over at night, that button got pushed. it was ultra sensitive. She went through 4 or 5 before they finally got one that didnt trigger when the wind blew. That was the life alert folks. Everytime it triggered they spoke to her thru the main machine.

I used to work as a medic, and frequently got the "life alert" response call for a pushed button, now unresponsive. They will roll an ambulance without hesitation, and 9 times out of 10 by the time we got there, the police had already arrived.