Eve Room, designed for use inside a home, can tell you the temperature and humidity in the room, plus it can measure air quality. A sensor inside analyzes volatile organic compounds and it will let you know when air quality declines because of cooking, smoking, cleaning products, and more.
Eve Weather is similar to Eve Room, but meant to be used outside. It doesn't include air monitoring capabilities, but it will give you accurate temperature and humidity readings outdoors and over time. It's IPX3 water resistant, so it can stand up to the elements.
Eve Energy is a smart outlet that allows whatever's plugged in to be controlled via Siri. It also measures the amount of energy being consumed, so it's ideal for products that can potentially use a lot of power, like space heaters or fans.
The final product, Eve Door & Window, monitors whether a door or window is open or closed and how long it was open or closed. It's ideal for making sure a door in the house is secure when away, and it also enables motion-based HomeKit features.
The Eve line of devices connect to your iPhone or iPad via Bluetooth and can be controlled through the Elgato Eve app. No hub is required and in addition to being able to be controlled through the Eve app, the products are also compatible with Siri and can be accessed in other HomeKit apps and when away from home with an Apple TV. With the Eve products, you can ask Siri a long list of questions like "What's the temperature in the living room?" or "Is the fan on?" or "Is the door open?"
I reviewed the Elgato Eve lineup when the products first became available last year. I had problems with them because HomeKit was still in the early stages of development, but since then, there have been a number of under-the-hood changes that have improved the functionality of HomeKit products. The Bluetooth-enabled Eve Weather and Eve Room are now some of my most reliable HomeKit devices.
The full line of Eve products can be purchased from Amazon. The Eve Energy is priced at $50, the Eve Door & Window is $40, the Eve Room is $80, and the Eve Weather is $50. One MacRumors reader will be able to get all four products for free through our giveaway. To enter to win, use the Rafflecopter widget below and enter an email address. Email addresses will be used solely for contact purposes to reach the winner and send the prize.
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