It is a very good idea to fit a smoke detector in your home. It really can be a life saver because, at night, it can wake you up if a fire starts and before you sleep forever from smoke inhalation.
However, when you leave home a free standing smoke detector won’t be heard by you if it goes off. What works in that case is a smoke detector that’s part of your wireless alarm system. If a fire starts while you are out your GuardHome alarm system will call your phone so you have a real chance to do something about it – in time.