The 10 Best Smart Door Sensors
January 05, 2019: The number-one consideration with these types of sensors is their ability to pair with your smart home system. If you already have a hub, you need one that pairs with it. If you use Alexa or Google Assistant, you'll want to be able to converse with it. But if you'd rather not get into that mess, you need a unit that can communicate with your smartphone without any extra equipment, and that's what sets the top items on the list apart.