Heya. Turns out the local Dollar Store sells these door/window opening screamers. I bought one a couple weeks ago, and now have it mounted inside my desk drawer - with a baby monitor transmitter hiding behind my computer. It doesn't say what it is, so now when I'm in the main house I can hear if she starts going through my desk drawer. I may pick up a few more over time, mount in the other drawer/cabinet spaces she's known to rummage through. When mounting it, be aware to mount it on the INSIDE of whatever you want to attach notification to. Otherwise they can just slide the switch to "off." It's got that annoying high pitched sine-wave siren sound.