I like the simplicity of this product. Does what it takes! An alarm is triggered when a door or window is opened. I don't like batteries. I wish they needed AAA instead. These batteries are very dangerous for children and now they are in every room of my house. In fact, I sealed each alarm clock with duct tape to prevent children from getting to the batteries, especially if the alarm clock falls and breaks. The "call" volume is the same as the alarm clock! Sorry for the glue. I love the product and would recommend it to anyone who needs basic security.
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