Live smarter with the Eve Door & Window wireless contact sensor. It understands whether your door or window sits open or closed. Additionally, you can see the current open or closed state at a glance. Not only that, but you can also view statistics on time and duration. This informs you to make smarter choices. Taking advantage of Apple HomeKit technology, Eve offers ease of use, advanced security, and tight integration with Siri. Finally, Eve Door & Window connects directly to your iPhone or iPad using Bluetooth. So you don’t need a hub, gateway, or bridge.