Feeling Secure In Your Home

I am so worried that someone will break into my home that I keep bothering the husband about all the doors being locked. I think I would sleep better if we could find the best among home alarm systems. I think if we had an alarm in our house I would be more comfortable at night. I would like to have some more warning to know if there is some stranger in the house and even better if there is one in the backyard. Well, for now we are comfortable with what we have but I know that eventually we will change things and when there is a sound in the backyard I will be sure to know its nothing.