Smart Home Sensors

Buy smart sensors

With smart sensors, your Smart Home moves from “app control” to automation based on what’s actually happening in your home. A sensor is the link that measures, detects, or signals—and then triggers actions: lights that switch on automatically when motion is detected, an alert when a room becomes too warm or too humid, or routines that improve comfort without you having to think about it. In this category you’ll find sensors for everyday convenience, energy-aware living, and a healthier indoor climate—standalone or as part of your complete Smart Home.

Which smart sensor fits your goal?

1) Motion detection (PIR): automatic lighting and smart alerts

With a PIR motion sensor (Passive Infrared), your home can react to presence. This is ideal for hallways, landings, toilets, utility rooms, or garages: you automate lighting, start a “night mode” with softer light, or receive alerts only when you want them. PIR sensors are also a strong base for safety-oriented routines, such as triggering a scene when motion is detected at an unusual time. See the subcategory PIR motion sensors.

2) Temperature & humidity: comfort and practical control

A stable indoor climate isn’t just about temperature—it’s also about humidity. With a temperature & hygrometer sensor you get insight into fluctuations that affect comfort (stuffy, too dry) and practical situations (condensation, the need for ventilation). This type of sensor is perfect for targeted automation: think of an alert when humidity gets too high in the bathroom or laundry room, or adjusting routines in combination with heating/ventilation (depending on your system). Explore Temperature & humidity sensors.

3) Air quality monitoring: stay on top of fresh air indoors

If you want to go beyond “warm/cold” and truly optimize comfort, air quality meters are a great next step. They provide data on your indoor air so you can time ventilation and routines more effectively. This is especially valuable in rooms where you spend a lot of time (living room, bedroom, home office) or where air quality changes quickly. See Air quality meters.

How to choose the right smart sensor

The best sensor isn’t necessarily the “most advanced”—it’s the sensor that measures reliably in your space and fits your ecosystem. Focus on these criteria:

• Goal & placement: a PIR sensor belongs on a natural walking route; a hygrometer works best in a representative spot (not directly above a shower or radiator).
• Power: battery-powered is flexible but requires occasional maintenance; mains power reduces maintenance but is less flexible for placement.
• Connection & ecosystem: some sensors use WiFi, others use Zigbee (often with a hub/gateway). Ideally stay consistent so everything lives in one app and one automation layer.
• Detection reliability: check detection angle, range, and adjustability (sensitivity/zones) when available.
• Automations: decide which actions you want to trigger (lighting, notifications, routines) so you don’t just collect “data,” but get real value from it.

Combine smart sensors: from measuring to automatic adjustment

You get the most benefit when sensors are combined with the right actions. For example, a PIR sensor becomes significantly more valuable when paired with smart lighting (automatic on/off based on presence). Climate sensors shine when connected to schedules or rules that support heating and comfort. If you want to make this part of a broader approach, combine sensors with Smart climate control for a logical “measure → understand → adjust” flow.

Frequently asked questions

Do I always need a hub?

Not always. It depends on the protocol and sensor type. WiFi sensors often connect directly to your network; Zigbee sensors usually require a hub/gateway. Check this per product, and ideally stick to one ecosystem if you plan to expand later.

How do I avoid unnecessary notifications?

Start with good placement (avoid “false” routes), adjust sensitivity/detection zones when possible, and use smart time windows: notify at night, and during the day only when you’re away.