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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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333 Results
4.3
Shelly Blu window and door sensor, Bluetooth, black
Door and Window Sensor -, compatible with Samsung SmartThings, connect via Bluetooth, battery indication and deviation angle adjustment, separately functional unit, supported OS: Android, Windows and iOS, application in Czech, application in Czech and English
18.90 €
Buy
On the way > 5 pcs
Expected 18/05/2026
Order Code: Shell23_024
4.0
Philips Hue Contact sensor White
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, White colour
Great price 38.90 €
Buy
On the way 1 pcs
Expected 26/05/2026
Order Code: PHLS23015
4.5
Nous E6 LCD Zigbee Smart Temperature and Humidity Sensor
Sensor - LCD temperature and humidity sensor, process automation, battery power, durability of 5 years, compatible with Google Assistant, Amazon Alexa and Tuya, connection via ZigBee 3.0, apps in Czech for Android and iOS
25.90 €
Buy
On the way 3 pcs
Expected 18/05/2026
Order Code: NOUSmh010
4.0
Shelly Gas, CNG Gas Detector, Alarm: Flashing LED & Acoustic Signal, WiFi
Detector - Shelly GAS is a compact and highly sensitive CNG natural gas detector, bringing additional security for your home and family. Alarm: flashing LED & acoustic signal. Alarm sensitivity: 6% LEL, noise level: ?70dB. Smart switching: Yes. Local and remote control: Yes. Dimensions: 89.5mm x 89.5mm x 38mm. Connection not included. Mobile app available in Czech, Slovak, English and other languages.
62.32 €
Buy
On the way > 5 pcs
Expected 18/05/2026
Order Code: SHELLa0009
24.90 €
Buy
On the way > 5 pcs
Expected 19/06/2026
Order Code: EVE1004
3.5
EVOLVEO Alarmex Pro (ACSALMPIR) wireless PIR motion sensor
Motion Sesnor , connect through GSM, closed system with detection motion, range: security, power supply: Battery-Powered,
23.90 €
Buy
On the way > 5 pcs
Expected 15/05/2026
Order Code: EVO22_12
4.6 20×
Shelly Gen3 H&T, battery operated temperature and humidity sensor with display, WiFi, ivory
Detector - battery operated temperature and humidity sensor with display, WiFi, ivory
45.90 €
Buy
On the way 1 pcs
Expected 13/05/2026
Order Code: Shell24_011
5.0
WOOX Smart Water Leak Sensor R7050
Water Leak Detector - detects water gas,, compatible with Tuya, central unit required to function,, app with Czech language support, app with Czech and English language support for Android and iOS
22.90 €
Buy
On the way > 5 pcs
Expected 18/05/2026
Order Code: Woox22_18
Solight wireless motion detector 1D23
Door and Window Sensor - with mains + battery power, connect via Radio frequency, range of 200m, separately functional unit
Discounted -11 % 15.90 € 17.90 €
Buy
On the way 5 pcs
Expected 18/05/2026
Order Code: Solight26016
EVOLVEO SecuPro, wireless siren with solar power
Siren - closed system, area of use: security, power supply: Battery-Powered, Solar and USB
30.90 €
Buy
On the way 1 pcs
Expected 13/05/2026
Order Code: EVO24013
5.0
Woox R7305 Smart Zigbee smoke detector
Smoke Detector - detects temperature, battery-powered , detection reach 30 m, notifications via push notifications, battery indication, cover material plastic, requires a central hub, app language: English , compatible with Android and iOS
35.90 €
Buy
Ordered on request
Order Code: Woox24006
4.6
IMMAX NEO Smart Occupancy Sensor, Zigbee 3.0
Motion Sesnor , connect through WiFi 2,4 GHz and WiFi 5 GHz, open system with detection motion and Light compatible with Apple Siri shortcuts, Tuya and Immax NEO PRO, range: lighting, electrical installation and security, application in English, Czech, German and Hungarian, power supply: Power plug and USB,
40.75 €
Buy
Ordered on request
Order Code: IMXX2333
3.0
ONDILO ICO Pool V2, smart water monitor, Cl/Br disinfection
Sensor - water quality analysis, minimal maintenance, durable construction
449.90 €
Buy
Ordered on request
Order Code: ONDa24002
3.0
EMOS GoSmart PIR sensor (motion sensor) with night light, Wi-Fi
Motion Sesnor , connect through WiFi 2,4 GHz, open system with detection motion compatible with Tuya, Lidl Home, Smartlife, EMOS GoSmart and Manufacturer app, range: lighting, application in English, Czech, German, Slovak, Hungarian and In Polish, power supply: Power plug,
21.58 €
Buy
Ordered on request
Order Code: EMOS24145
5.0
Eufy Security Water and Freeze Sensor
Water Leak Detector - detects water gas, battery-powered, range: 200 m, compatible with Google Home and Manufacturer app, connect via WiFi 2,4 GHz, central unit required to function, app with English language support for Android and iOS
Buy with code ALZADAYS25AT 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 ALZADAYS25AT. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 39.68 €
52.90 €
Buy
Ordered on request
Order Code: Anker24014
3.0
Imou gas sensor/detector ZGA1
Gas Leak Detector - mains power supply, detection reach 200 m, acoustic, visual signals, notifications via push notifications, signal volume 85 dB, features self-diagnostics, automatic scenarios and alarm, cover material plastic, power adapter and mounting kit included, requires a central hub, app language: English , compatible with Android and iOS
28.90 €
Buy
Ordered on request
Order Code: Imou23_40
5.0
EVOLVEO Alarmex Pro (ACSALMSMK) wireless smoke detector
Smoke Detector - mains power supply, detection reach 80 m, acoustic signals, signal volume 90 dB, features: test button, cover material plastic, operating temperature from 0 to 55 °C, input voltage 9 V, standalone unit requires a central hub
28.90 €
Buy
Ordered on request
Order Code: EVO22_08
3.3
Nedis ZBDCO11WT
Gas Leak Detector - detects CO (carbon monoxide), battery-powered, acoustic signals, notifications via push notifications, signal volume 85 dB, battery indication, features alarm, cover material plastic, operating temperature to 50 °C, battery included, compatible with Nedis SmartLife, standalone unit, compatible with Android and iOS
58.90 €
Buy
Ordered on request
Order Code: Nedis23_002
5.0
EMOS GoSmart PIR sensor (motion sensor), ZigBee
Motion Sesnor , connect through WiFi 2,4 GHz and Bluetooth, open system with detection motion compatible with Tuya, Lidl Home, Smartlife, EMOS GoSmart and Manufacturer app, range: security, application in English, Czech, German, Slovak and Hungarian, power supply: Battery-Powered,
32.58 €
Buy
Ordered on request
Order Code: EMOS24055
EMOS Microwave sensor (motion sensor) IP20, 2000 W, 360°, mounted
Motion Sesnor with detection motion, range: lighting, power supply: Power plug,
New arrival 17.50 €
Buy
Ordered on request
Order Code: EMOS26066
EMOS PIR sensor (motion sensor) IP20, 1200 W, 360°, mounted
Motion Sesnor with detection motion, range: lighting, power supply: Power plug,
New arrival 10.54 €
Buy
Ordered on request
Order Code: EMOS26067
EMOS GoSmart PIR sensor (motion sensor) IP20, 60°, ZigBee
Motion Sesnor , open system with detection motion compatible with Tuya, Lidl Home, Smartlife and EMOS GoSmart, range: lighting and security, application in English, Czech, German, Slovak, Hungarian, In Polish, In Spanish, In French and In Italian, power supply: Battery-Powered,
New arrival 19.54 €
Buy
Ordered on request
Order Code: EMOS26065
EMOS GoSmart Wireless door/window sensor IP-2111Z, ZigBee
Door and Window Sensor - wireless, compatible with Tuya, Lidl Home, Smartlife and EMOS GoSmart, battery indication and protection against sabotage, central unit required, supported OS: Android and iOS, application in Czech, application in Czech and English
New arrival 13.42 €
Buy
Ordered on request
Order Code: EMOS26064
EMOS PIR sensor (motion sensor) IP20, 1200 W, 360°, built-in
Motion Sesnor with detection motion, range: lighting, power supply: Power plug,
New arrival 11.38 €
Buy
Ordered on request
Order Code: EMOS26063
 

Smart Home Sensors & Detectors

Smart Home Sensors & Detectors

In the category Smart Home Sensors & Detectors on Alza.at, we currently have a total of 333 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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