Here are some links/information for you, for door safety gadgets for deaf people:
http://www.irishhealth.com/article.html?id=1656
http://www.focusondisability.org.uk/eqp-access.html
http://www.seniorssuperstores.com/cart/html/Products/SAFE...
Or do your own Google Search on it.
You need to put extra latches/dead bolts on your doors.
Put them high up on the door.... so that your kids, cannot reach it. At least 5-6+ feet up the door.
But nowadays, it does not matter, to thieves, if a house is occupied or not... they break in anyway. As we hear on the news...
Also, put flood-lights outside... that are triggered by movement. Go to a Home Depot... they have them or call an electrician to install it.
Put the lights... right at any doorway of your home.
Or, install a camera... at your door... so that you do not have to open the door... but can 'see' who is there...
Or have a dog....
Or, put in timers on your lights... so that it goes off or on at intervals... making it seem like people are home in the house... even if you are not home.
Or leave a TV on....
Or, call you local police department.. .and they may have a community safety department... to give you tips....
Or, if your neighborhood does not have one already... form or have a Community Watch program... whereby the neighbors take turns watching the neighborhood and report any weird happenings or strangers around premises....
all the best,
Susan