What has changed on the Eve Motion price?
TechRadar's round-up of smart home upgrades under £45 lists the Eve Smart Indoor and Outdoor Motion Sensor at £30.09 on Amazon UK, a 33% cut from £44.95. The sale runs from 12.01am on 6 October to 11.59pm on 7 October, for Prime members only, according to Amazon UK.
Prices on Amazon move during an event, so treat £30.09 as a snapshot rather than a guaranteed price. Before you pay, open the listing and check that it is the Eve Motion with Thread and Matter support, not an older HomeKit-only Bluetooth model, because the older version does not suit Home Assistant. Our Prime Big Deal Days buying guide covers how to judge whether any discount is real.
What does the Eve Motion actually do?
It is a small battery-powered motion sensor with a built-in light sensor, designed for indoor and outdoor use. Eve's own figures for the second-generation model are in the table below.
| Spec | Eve's stated figure |
|---|---|
| Radio | Thread |
| Matter | Free over-the-air firmware update for Thread products |
| Field of view | 120° |
| Detection range | Up to 9 m, mounted at 2 m high |
| Light sensor | 0–15,000 lux |
| Weather rating | IPX3 |
| Power | 2 × AAA, replaceable |
Eve's announcement states these figures and says Thread-enabled Eve products receive free over-the-air firmware updates so they can be used with other Matter ecosystems. It does not publish a battery runtime, so don't assume one. IPX3 means it tolerates spray, which suits a porch or covered entrance rather than an exposed wall.
Does the Eve Motion work with Home Assistant?
Yes, through Home Assistant's Matter integration, provided the sensor is running Matter firmware. Home Assistant's Matter documentation says Matter products run locally and always allow local control, with no internet connection or cloud service needed to operate them.
Because the Eve Motion uses Thread, you need a Thread border router near it, plus Home Assistant's Matter Server. You commission it with the Companion app by scanning the QR code or entering the setup code. Bluetooth is only used for pairing, not for control. If you are new to this, our Thread explainer and guide to Matter devices in the UK cover what a border router is and which of your existing speakers or hubs already act as one.
Eve's own set-up notes mention an iPhone or iPad, and a HomePod or Apple TV for remote access in the Apple Home app. That is Apple's route, not a requirement for Home Assistant, but check Eve's current instructions for first-time setup before you buy.
Is £30 a good price for a Home Assistant motion sensor?
It is a fair price for a local, Thread-based sensor, and a clearly better fit than the cloud-only cameras that dominate Amazon's own discounts. The motion and lux readings can trigger lights, so the combination is useful for automations such as turning on a hallway light only when it is dark.
The trade-off is that a PIR sensor only sees movement, so someone sitting still can leave a room looking empty. For rooms where you need to know whether anyone is present, our best mmWave presence sensors guide covers the alternatives. If you already run Thread, our Thread network visualiser guide helps you check coverage before adding battery sensors at the edge of the mesh.
Should you buy it now or wait?
Buy now if you already have a Thread border router and a motion automation in mind, and the listing confirms the Matter-capable model at or near £30. Wait if you have no border router yet, since you would be adding that cost, or if the price on the listing is higher than TechRadar's snapshot. A sensor at this price is a safe small purchase either way, and Black Friday is the next chance to compare.
