What we like
- Included spacers help align a recessed frame
- Opening times and duration history in Eve’s Apple app
- Battery changes leave the adhesive mount in place
What could be better
- Much dearer than IKEA for basic open/closed sensing
- Unusual half-AA battery to keep in stock
- 23 mm sensor depth can look bulky on a slim frame
The frame can make the extra cost worthwhile
Eve Door & Window has a useful piece of hardware that is easy to miss in the product photo: spacers for the smaller magnet. They raise it to meet the sensor on a recessed door or window frame. That is a practical reason to consider Eve, especially when a cheaper sensor cannot line up properly.
The sensor itself is 52 × 24 × 23 mm. Its short, narrow face is fairly discreet, but the depth makes it a noticeable white block on a slim frame. The included adhesive avoids screws, and the battery compartment slides off without peeling the mount away. Those small design choices matter more over time than another smart-home badge.
The replaceable battery is less convenient: a 3.6 V ER14250 half-AA cell, supplied in the box. It is not a standard AA or AAA. We would keep a spare rather than assume the household battery drawer will cover the next replacement.
History is the other reason to choose Eve
In an Apple home, the Eve app can show when the window opened and how long it stayed open. That makes the sensor useful for looking back at ventilation habits, beyond the immediate open/closed state. Eve does not require its own account, subscription or cloud service for the sensor.
The current Matter model also works with other compatible platforms, but Eve's detailed opening history is an Apple-app benefit. A simple “turn on the pantry light” routine does not need that history. Buying Eve for such a job can mean paying for the part you will never use.
A premium purchase for a particular door
The checked US single-sensor price is $43.95. IKEA MYGGBETT is $11.99 before its AAA battery, and is our better-value starting point when its gap under 5 mm works on the frame. Both can join an existing Matter-over-Thread home without a separate brand bridge.
For a home that already has a Tapo hub, the $13.99 T110 is another sensible alternative. Its 12.3 mm body is thinner and its allowed gap reaches 15 mm, although its Tapo hub remains essential.
Choose Eve for a frame that benefits from the supplied spacers, or for opening history you will actually consult. For several straightforward indoor doors, the lower-cost options leave much more of the budget for the lights or heating you want them to control.
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