The WeMo Window and Door Sensor sticks onto doors, windows, cabinets, and anything else that opens and shuts. When the door (or whatever else you're monitoring) opens, the two magnetic halves separate, triggering an alert in the WeMo app.
The WeMo Keychain Sensor is another handy way of telling when people or things are coming and going. Just attach it to your keychain, your pet's collar, or your child's backpack, and you'll be able to track whenever it's home -- and when it's away.
The new sensors use Zigbee radios to communicate, not Wi-Fi. That means that you'll need to have a WeMo Link plugged in somewhere in your home in order to translate the signals for your router. Currently sold with the WeMo LED Starter Set, the WeMo Link will soon be sold on its own, and as a part of new WeMo bundles.
But wait -- there's more! Belkin also offered us a sneak peak of "Echo Technology," which is coming a little further down the line. With this Echo-powered WeMo water sensor clamped under your sink, you'll be able to monitor water usage throughout your entire house.
Here's a glimpse of Echo in action. From just a single sensor, Belkin claims you'll be able to distinguish between all the different water sources in your home and monitor for things like leaks and inefficiency.