Best Smart Home Sensors: Door, Window and Motion

Quick answer: Start with a door and window sensor for security alerts and a motion sensor for lighting automations. Check how each one connects: both sensors below need their brand's hub (Aqara hub or Philips Hue Bridge).

Specifications checked against manufacturer pages on 23 October 2026. We have not physically tested these products; this guide is based on manufacturer documentation.

Which smart sensors are worth buying?

• Door and window sensors tell you when something opens. Useful for entry alerts and for turning lights on when you come home.
• Motion sensors trigger lights or routines when someone enters a room.
• Leak sensors catch water damage early, especially in bathrooms and kitchens.

Sensors in our catalogue

How sensors connect

Most battery sensors use Zigbee or Thread rather than Wi-Fi, because those radios use less power. That is why they need a hub or a Thread border router. Wi-Fi sensors need no hub but use more battery. Read Zigbee vs Z-Wave and best smart home hubs for beginners for more.

Automation ideas

• Hallway light on when the motion sensor triggers after sunset.
• Notification when the front door opens while you are away.
• Lights off when the last sensor detects no motion for 10 minutes.

See sensor ideas by room in entryway devices and home automation devices. Check any sensor in the compatibility checker.

FAQ

Do smart sensors work without a hub?

Some Wi-Fi sensors do. Zigbee sensors such as the Aqara T1 and the Hue motion sensor need their hub or bridge.

Are smart sensors renter-friendly?

Yes. Most stick on with adhesive and need no wiring.

Sources

• Aqara hub page
• Philips Hue Indoor Motion Sensor