If you are one of the many people who need to know their smoke alarm is one that works when you most need it, SmokeSOS can help. An annoying sound in many homes is a smoke alarm with a low battery. It will constantly beep until you have replaced the battery. It is a good thing but can be frustrating. This is something you won’t experience with SmokeSOS, thanks to the incredibly long battery life. The 10-year lithium battery is sealed in so it can’t be tampered with, and is something you don’t have to worry about replacing for some time.