First Alert Door Alarm

http://www.firstalertalarmsystem.com/

When our son was young, he would manage to open windows and doors to wander out of the house, day or night, even in winter. First Alert Door Alarms are inexpensive alarms you peel and place to install. If the alarm is triggered it will make a high-pitched piercing sound or, you can set the alarm to chime like a doorbell. It's good for windows, doors or entrance to the swimming pool.

For more information and resources on autism, go to:http://www.autismconcepts.com/.