The Pop is a button. A button that does stuff. Three things in fact, depending on how you press it, and what it does is completely up to you. It can dim your lights. It can control your SONOS system. If you have a Logitech Harmony Hub (ahem), it can even control your home theater. Hell, it can even trigger an IFTTT recipe, meaning it can do basically anything.
The starter kit (which includes two buttons and a bridge) is down to $60 on Amazon right now, if you’re willing to wait out a backorder. That’s $40 less than usual, and an all-time low.