That cool switch plate offers some kind of unique functionality. You may record a message (up to 20 seconds) that will automatically play each time someone flips the switch. It can easily replace an existing switch plate. Just not sure how to 4 AAA batteries will fit the switch box. Also the Parrot Digital Messaging Switch Plate is cheap (just $9.99). So, you can simple try it to see how it fits your life.
Unfortunately, I didn’t find the possibility to ship that messaging plate to Cyprus. So, I have no idea how it useful but personally I prefer notifications on my cell phone 🙂