Product Library / Sensors & Detectors
Research profile · last verified 2026-07-16Aqara Motion and Light Sensor P2
Compatibility
| Ecosystem | Support | The catch |
|---|---|---|
| Amazon Alexa | PartialPartial support — see the catch | Via Matter over Thread only — needs an Echo that is both Thread border router and Matter controller. Aqara states Alexa does not support the light-sensor function, so only motion is usable. |
| Google Home | WorksWorks with this ecosystem | Via Matter over Thread — requires a Google Thread border router (e.g., Nest Hub 2nd gen) as the controller. |
| Apple Home | WorksWorks with this ecosystem | Via Matter over Thread — requires a HomePod or Apple TV as Thread border router/controller. Motion and light sensor both exposed. |
| SmartThings | WorksWorks with this ecosystem | Via Matter over Thread — requires a SmartThings hub with Thread border router capability (Station, Hub v3, Aeotec). |
| Home Assistant | WorksWorks with this ecosystem | Officially listed by Aqara; joins through Home Assistant's Matter integration, which needs the Matter server add-on plus a Thread border router. |
Protocols: THREAD · MATTER · BLUETOOTH
Needs before it works: Thread border router (HomePod mini/Apple TV 4K, Nest Hub 2nd gen, newer Echo devices, SmartThings hubs with Thread, or an Aqara Hub M3) plus a Matter controller in your ecosystem. No Aqara hub required — but adding an Aqara Hub M3 unlocks custom detection timeout, sensitivity tuning, and local alerts via Aqara Home.
Subscription reality
✓ Works without a subscription: Yes.
Maintenance reality
- Batteries: CR2450 x2 — expect roughly 24 months per set
- Cloud dependence: No — core function survives without the vendor's cloud
- Batteries included; Aqara rates life at up to 2 years. Matter-over-Thread automations run locally through the controller.
The catch
Nothing works without both a Thread border router and a Matter controller, and feature depth varies by ecosystem — Alexa drops the light sensor, and tuning sensitivity or detection timeout requires adding an Aqara hub.
Who it's for
Suits households that already run a Thread border router (HomePod, Apple TV 4K, Nest Hub, newer Echo, or SmartThings hub) and want a battery-powered, locally controlled motion-plus-illuminance trigger without an Aqara hub.
Sources & method
us.aqara.com/products/motion-and-light-sensor-p2 (official US store product page) — vendor-page research, verified 2026-07-16 · csa-iot.org/csa_product/motion-and-light-sensor-p2/ — CSA certified-products entry under Lumi United Technology (certificate ID seen via search snippet of the CSA page, not a direct page fetch) — registry lookup, verified 2026-07-16 · aqara.com/en/motion-and-light-sensor-p2-specs/ + aqara.com/en/product/motion-and-light-sensor-p2/ — vendor-page research, verified 2026-07-16. This is a research profile: compiled from manufacturer documentation, certification registries, and published testing — we state facts, not verdicts, and we have not physically tested this unit. How we work →
Compatibility and lifecycle information reflects the last-verified date above and can change without notice (firmware updates, cloud-service changes, discontinuations). It is provided as-is, for information — verify with the manufacturer before purchasing. Spot an error? Tell us and we'll fix it. Full terms: Terms of Service.