GE personal security window / door alarms

I bought these alarms a few months ago because I have two autistic kids that need to be kept safe. These alarms have two settings ; alarm siren and charm. They are so LOUD that they are completely perfect for alerting my husband and I when a door is opened. We attached the alarms to our exterior doors, and with a 120 decibrl alarm we definitely hear it the second our start to open a door. Being autistic, my kids don't like loud noise, and these alarms have been amazing at deterring our kids from touching the doors. Even my dog whimpers when the alarms sound. We are moving to a new home soon and I will definitely be purchasing more alarms for doors and windows as soon as we move.