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Smart Home Sensors & Detectors


SmartHome detectors and sensors are designed both for connection to central units and for stand-alone use without them. These are, for example, motion sensors, smoke, gas or CO detectors or anti-flood detectors. All the sensors work with smartphones, so you always have a full overview of what's going on in your home.

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Installing a SmartHome system is easy

The installation of various detectors and sensors is user-friendly and does not require any construction modifications or complicated wiring, as these expansion modules communicate wirelessly.

Pay attention to compatibility

When choosing expansion modules, it is important to focus on the communication protocol.

  • Some accessories require a connection to the central unit. The purchased module must be built on the same communication protocol as this unit, such as ZigBee or Z-Wave. Otherwise, the two devices will not communicate.
  • Other devices work independently, for example via Bluetooth or Apple HomeKit. They can be controlled via the manufacturer's app and don't require a central unit to work.

SmartHome detectors and sensors have many uses

There are a number of detectors and sensors on the market, so we sort them into groups for better clarity.

  • Motion detectors
  • Motion detectors for windows or doors
  • Smoke, gas or carbon monoxide detectors
  • Vibration detectors
  • Flood detectors
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330 Results
4.4
Honeywell Home R200ST-N2 Interconnected fire alarm detector - smoke (optical) and temperature princi
Smoke Detector - temperature measurement from 0 to 70 °C, battery-powered , acoustic signals, signal volume 85 dB, features: test button, cover material plastic, operating temperature to 40 °C, operating humidity up to 93 %, input voltage 3V, battery included, standalone unit
46.90 €
Buy
In stock 3 pcs
Order Code: HNW22_06
4.8 13×
SwitchBot Meter Pro
Sensor - temperature detection, humidity, temperature measurement from 0 to 50 °C with an accuracy of 0.5 °C, moisture measurement with 3% accuracy, battery power, notifications via push notifications, battery status indication, cover material plastic, operating temperature from 0 to 50 °C,, central unit required for functionality, applications in Czech and English, compatible with Android and iOS
Discounted -22 % 26.90 € 34.90 €
Buy
In stock > 5 pcs
Order Code: SwBot2410
4.9 41×
IMMAX NEO Smart magnetic sensor for doors and windows, Zigbee 3.0
Detector - protects your home, requires connection to a smart gateway or other Zigbee 3.0 hub, alerts via mobile app, range up to 30 m, runs on a 3V CR2032 battery
14.90 €
Buy
In stock > 10 pcs
Order Code: IMMX_22_31
4.6 20×
Shelly Gen3 H&T, battery operated temperature and humidity sensor with display, WiFi, black
Detector - dimensions without stand 70 x 70 x 26 mm, with stand 70 x 70 x 45 mm, ambient temperature 0 °C to 40 °C, humidity between 30% and 70% relative humidity, 4 AA (LR6) 1.5 V batteries (batteries not included), USB Type-C power supply (cable not included)
32.90 €
Buy
In stock > 5 pcs
Order Code: Shell24_008
5.0
Eve Water Guard - Water Leak Detector - compatible with Thread
Water Leak Detector - detects water gas, mains power, sound level: 100dB, compatible with Apple Home, Apple Siri shortcuts and Samsung SmartThings, connect via Bluetooth, standalone functional unit, app with English language support for iOS
94.90 €
Buy
In stock 2 pcs
Order Code: Eve22_001
4.5 26×
IMMAX NEO 3x Smart magnetic sensor for doors and windows, Zigbee 3.0
Detector - Smart magnetic sensor for windows and doors to secure your home, ZigBee 3.0, three pieces in the package, CR2032 battery, Immax NEO PRO app in Czech and 60 other languages compatible with iOS, Android, with Amazon Alexa voice assistants, Apple Siri Shortcuts, Google Assistant and TUYA systems, LIDL
37.90 €
Buy
In stock > 5 pcs
Order Code: IMMX_22_30
4.3 22×
IMMAX NEO LITE Smart pool temperature sensor + 2x indoor temperature and humidity sensor
Temperature Sensor - TUYA, 2.4GHz WiFi connection, indoor and outdoor unit, monitoring the current pool water temperature, indoor temperature and humidity, date and time controlled from the internet with manual settings, alarm clock with snooze option, viewing the measured values in Immax NEO PRO, iOS compatible, Android, supports Apple Siri shortcuts, TUYA and LIDL systems
49.90 €
Buy
In stock > 5 pcs
Order Code: IMMX25001
4.1 14×
IMMAX NEO Smart PIR sensor 2in1 Zigbee 3.0
Motion Sesnor , open system with detection motion and Light compatible with Apple Siri shortcuts, Tuya, Lidl Home, Smartlife, Nedis SmartLife, ETA SMART, Tesla Smart and Immax NEO PRO, range: lighting, security and home control, application in English, Czech, German, Slovak, Hungarian and In Polish, power supply: USB,
Buy with code ALZADAYS25DE The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 25 % Rabatt mit dem Code ALZADAYS25DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 13.43 €
17.90 €
Buy
In stock > 10 pcs
Order Code: IMMX24071
4.1 17×
AQARA Motion and Light Sensor P2
Motion Sesnor , connect through Bluetooth, open system with detection motion and Light compatible with Apple Home and Aqara Home, range: lighting and security, application in English, Czech, German, Slovak and In Polish, power supply: Battery-Powered,
29.90 €
Buy
In stock 4 pcs
Order Code: Aqara24002
9.29 €
Buy
In stock > 10 pcs
Order Code: SNFa109
4.0
AVATTO Zigbee Smart Humidity & Temperature Sensor
Sensor -Zigbee temperature and humidity sensor, compatible with Tuya and ZigBee, Support for Alexa and Google Assistant voice control, clear LCD display, automation of ventilation, air conditioners and humidifiers, high accuracy ±1 °C / ±5 % RH, CR2430 battery power supply, table and wall mounting, white design
Buy with code ALZADAYS30DE The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 30 % Rabatt mit dem Code ALZADAYS30DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 17.43 €
24.90 €
Buy
In stock > 10 pcs
Order Code: AVT061a
3.8 18×
Meross Smart Temperature and Humidity Sensor Kit MS100F+ MSH300
Sensor - temperature measurement in °C or °F, measurement of humidity in %, functionality only with Meross Hub (included), mobile apps, notifications, battery operation (CR2477), integrated solar panel for self-powering
41.90 €
Buy
In stock > 5 pcs
Order Code: Mer24_09
3.5
iGET SECURITY P11v2 - wireless outdoor siren (battery/adapter)
Siren - closed system, area of use: security, OS supported: Android and iOS, power supply: Power plug and Battery-Powered, in Czech and English
52.90 €
Buy
In stock 1 pcs
Order Code: iGt21012
4.0
AQARA Vibration Sensor T1 (VB-S01D)
Vibration Detector - detects Opening windows and doors, Fall and vibration gas, battery-powered, reaction time: 1s, compatible with Apple Home and Manufacturer app, battery indication and adjustable sensitivity, central unit required to function,, app with Czech language support, app with Czech and English language support for Android and iOS
Amazing Deal 19.99 €
Buy
In stock > 10 pcs
Order Code: Aqara25021
4.6 14×
iGET SECURITY P14 - wireless smoke detector for iGET SECURITY M3B and M2B
Smoke Detector - battery-powered , reaction time 1 s, acoustic, visual signals, notifications via SMS, signal volume 85 dB, features: test button, cover material plastic, operating temperature from 5 to 50 °C, operating humidity from 20 to 90 %, compatible with iGet Home, standalone unit
20.90 €
Buy
In stock > 5 pcs
Order Code: NU105z
5.0
RETLUX RSH 308 PIR Smart Motion Sensor
Motion Sesnor , connect through Radio frequency, closed system with detection Human presence compatible with Google Home, Tuya and Manufacturer app, range: security and home control, application in English, Czech and Slovak, power supply: Battery-Powered,
Buy with code ALZADAYS15DE The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 15 % Rabatt mit dem Code ALZADAYS15DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 15.90 €
18.71 €
Buy
In stock > 5 pcs
Order Code: RTLX25040
4.5 34×
AQARA Cube T1 Pro
Smart Wireless Remote Zigbee scene controller
22.99 €
Buy
In stock > 10 pcs
Order Code: Aqa22_10
4.8
Netatmo Smart Door and Window Sensors
Door and Window Sensor - wireless, compatible with Apple Home and Manufacturer app, connect via Radio frequency, central unit required, supported OS: Android and iOS, application in Czech, application in Czech and English
107.90 €
Buy
In stock > 5 pcs
Order Code: NET050b
4.0
Meross Smart Door and Window Sensor Kit
Door and Window Sensor - with mains + battery power, compatible with Apple Home, Samsung SmartThings and Manufacturer app, connect via WiFi 2,4 GHz, range of 100m, central unit required, supported OS: Android and iOS, application in English
22.90 €
Buy
In stock > 5 pcs
Order Code: Mer24_11
4.3 44×
Xiaomi Mi Wireless Switch
Smart Wireless Switch - compatible with Xiaomi Home, control via app on Android, Windows and iOS, connect via WiFi 2,4 GHz, application in English
16.90 €
Buy
In stock 5 pcs
Order Code: XI300l03
4.7 16×
FIBARO Motion Sensor
Motion Sensor - for alarm, Interior, battery powered, input voltage: 3V, reach of 7m, connection via WiFi 2,4 GHz and Bluetooth, independently functional unit, application in Czech, applications in Czech and English for Android and iOS
68.90 €
Buy
In stock > 5 pcs
Order Code: FIBR01b
4.8 10×
Philips Hue Contact sensor Black
Sensor - security sensor on the windows, door or safe, sends an alert or triggers a preset light alarm, includes a magnetic counterpart, IP20, can be glued or screwed (material not included), bridge required for full functionality, black
38.90 €
Buy
In stock 1 pcs
Order Code: PHLS23014
4.7 47×
IMMAX NEO LITE Smart IR remote control with temperature and humidity sensors, WiFi
Smart Wireless Remote - Smart IR, TUYA, WiFi, remote control of all devices, which are normally controlled by remote control with IR port, remote control, automation, measures temperature and humidity, Immax NEO PRO app in Czech and 60 other languages compatible with iOS, Android, with Amazon Alexa voice assistants, Apple Siri Shortcuts, Google Assistant and TUYA systems, LIDL
24.90 €
Buy
In stock > 5 pcs
Order Code: IMMX_21_02
4.1
AQARA Presence Sensor FP1E (PS-S03D), Zigbee
Motion Sesnor , connect through Radio frequency, open system with detection motion compatible with Aqara Home and Manufacturer app, range: lighting and security, application in English, Czech and Slovak, power supply: Power plug and USB,
49.99 €
Buy
In stock > 5 pcs
Order Code: Aqara24009

Smart Home Sensors & Detectors

Smart Home Sensors & Detectors

In the category Smart Home Sensors & Detectors on Alza.de, we currently have a total of 330 products, which you can easily buy online and get quickly delivered. See all of your purchases and make orders on our easy-to-use app.
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