First Alert Smoke and Carbon Alarm

Pros:This is an excellent choice, It works great an installs easily. Cons: Not approved in the state of Massachusetts. If your getting a house ready to sell in Massachusetts your local fire department must inspect your house prior to closing. A combo carbon monoxide & photoelectric smoke alarm MUST have a voice alert so you know which alarm is alerting. I did not know this prior to purchasing. The fireman told me you can't even purchase these in Massachusetts and asked me if I bought them in NH where they are legal. I said no I bought them from Amazon. I guess if they were bought for your house that you live in they would probably be okay! Make sure your state approves the use of this non-voice photoelectric detector. You must have both carbon monoxide & smoke alarms installed in a dwelling prior to closing on a purchased property. I suppose they could be separate units but if it's a combo unit it must have voice warnings.