I have been with this company for several years and have gone through three name changes. With the last name change they never gave me new signs so I still have the second name change on my sign. If the smoke alarm goes off you have to phone the company from a cell phone to notify them of the false alarm or the fire department arrives. I had this happen a couple of times. The first time it happened I was still in my house coat and very pregnant. The land line goes dead for a minute or so when the alarm goes off. On the plus side the company will phone back and check if everything is alright.