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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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336 Results
4.8 10×
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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
  41.90 €
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On the way 1 pcs
Expected 07/09/2026
Order Code: PHLS23014
4.0 24×
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Nuclear radiation detector JT-RAD01
Detector The JT-RAD01 is a radiation meter for the detection of γ-, β- and X-rays and is characterized by particularly easy handling, high measurement stability and a practical and robust design. The meter has a large colour LCD display with backlight. The measurement results can be displayed both as an overview statistic and as an evaluation graph. J17
  81.90 €
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On the way > 5 pcs
Expected 02/09/2026
Order Code: m23_01
5.0
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SONOFF SenseGuard Series SenseGuard DW Gen2 Zigbee Door/Window Sensor
Door and Window Sensor - wireless, compatible with eWeLink, connect via Radio frequency, range of 100m, central unit required, supported OS: Android and iOS
  14.90 €
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On the way > 5 pcs
Expected 06/10/2026
Order Code: SNF2623
2.5
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Sonoff MS01 Smart Soil Moisture Sensor
Sensor - humidity sensor, waterproof (IP55), compatible with Sonoff TH Origin/Elite sensor, cable 50 cm long, support for voice assistants, operating temperature 0 to 60 °C, humidity measurement 0-99% RH, RJ9 4P4C connector
  17.90 €
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On the way > 5 pcs
Expected 06/10/2026
Order Code: SNFa058
4.0
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Netatmo 2x Smart AC Controller
Smart Wireless Remote to the air conditioning, smart, WiFi 2.4 GHz, iOS apps, Android, compatible with Apple HomeKit, Google Home, Amazon Alexa
  207.64 €
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On the way 3 pcs
Expected 14/09/2026
Order Code: Neta2401
4.0
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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
  41.90 €
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Ordered on request
Order Code: PHLS23015
5.0
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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
  46.90 €
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Ordered on request
Order Code: EVO22_08
4.6
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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 Lights 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 €
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Ordered on request
Order Code: IMXX2333
4.7 13×
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FIBARO Smoke Sensor
Smoke Detector - detects temperature, temperature measurement from -20 to 100 °C, battery-powered , acoustic, visual signals, signal volume 85 dB, battery indication, features: alarm, operating temperature from 0 to 55 °C, operating humidity from 0 to 93 %, battery included, standalone unit requires a central hub, app language options: Czech and English
  77.90 €
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Ordered on request
Order Code: FIBR01f
3.0
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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,
  21.90 €
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Ordered on request
Order Code: EMOS24145
4.5 23×
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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
  41.90 €
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Ordered on request
Order Code: Shell24_011
3.0
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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
  42.90 €
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Ordered on request
Order Code: Imou23_40
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IMMAX NEO Smart Temperature and Humidity Sensor with LCD, e-Ink, Zigbee 3.0
Temperature Sensor
  28.51 €
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Ordered on request
Order Code: IMMX26051
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IMMAX NEO Smart Magnetic Sensor for Doors and Windows, Zigbee 3.0, Black
Door and Window Sensor - wireless, compatible with Tuya, Lidl Home, Smartlife, Nedis SmartLife, ETA SMART, Tesla Smart, Immax NEO PRO and MOES, battery indication, central unit required, supported OS: Android and iOS, application in Czech, application in Czech and English
New arrival 14.21 €
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Ordered on request
Order Code: IMMX26080
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IMMAX NEO Smart Smoke Sensor, Zigbee 3.0
Smoke Detector - battery-powered , acoustic signals, notifications via push notifications, signal volume 85 dB, battery indication, features: test button, reset and alarm, cover material plastic, operating temperature from -10 to 50 °C, operating humidity up to 95 %, ingress protection IP20, input voltage 3V, mounting kit included, compatible with Tuya, Lidl Home, Smartlife, Nedis SmartLife, ETA SMART, Tesla Smart, Immax NEO PRO and MOES, requires a central hub, app language options: Czech and English , compatible with Android and iOS
  24.42 €
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Ordered on request
Order Code: IMMX26050
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iGET SECURITY MP14, for M6-4G alarm or standalone
Smoke Detector - battery-powered , detection reach 500 m, acoustic, visual signals, notifications via push notifications, signal volume 85 dB, battery indication, features: alarm, cover material plastic, operating temperature from 0 to 40 °C, operating humidity from 10 to 90 %, ingress protection IP20, input voltage 3V, battery and mounting kit included, standalone unit requires a central hub, app language options: Czech and English , compatible with Android and iOS
New arrival 32.90 €
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Ordered on request
Order Code: IGET26009
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iGET SECURITY MP19, Wireless Carbon Monoxide (CO) Detector for M6-4G
Gas Leak Detector - detects CO (carbon monoxide), measurement range from 50 to 300 ppm, gas detection sensitivity 100 ppm, battery-powered, detection reach 500 m, acoustic, visual signals, notifications via push notifications, signal volume 85 dB, battery indication, features alarm, cover material plastic, operating temperature from -10 to 50 °C, operating humidity from 30 to 95 %, ingress protection IP20, input voltage 3V, battery and mounting kit included, standalone unit requires a central hub, app language options: Czech and English , compatible with Android and iOS
New arrival 40.90 €
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Ordered on request
Order Code: IGET26010
3.3
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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
  57.90 €
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Ordered on request
Order Code: Nedis23_002
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EMOS GoSmart Water Leak Detector P56000S, ZigBee
Water Leak Detector - detects Water gas, battery-powered, sound level: 85dB, compatible with Tuya, Lidl Home, Smartlife, EMOS GoSmart and Manufacturer app, battery indication, central unit required to function,, app with Czech language support, app with Czech and English language support for Android and iOS
  27.27 €
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Ordered on request
Order Code: EMOS24054
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EMOS Microwave sensor (motion sensor) IP20, 1200 W, 360°, built-in
Motion Sesnor with detection motion, range: lighting, power supply: Power plug,
  19.53 €
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Ordered on request
Order Code: EMOS26068
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iGET SECURITY MP1 - Wireless Motion PIR Sensor for M6-4G Alarm, without animal detection up to 35kg
Motion Sesnor , connect through Radio frequency, closed system with detection motion compatible with Manufacturer app, range: security, application in English, Czech, Slovak, Hungarian and In Polish, power supply: Battery-Powered,
New arrival 24.89 €
Buy
Ordered on request
Order Code: IGET26004
4.9 13×
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Airthings Corentium Home (224 B/m3) - digital radon detector
Air Quality Meter - detects radon, battery-powered, display, features: memory, cover material plastic, operating temperature from 4 to 40 °C, battery included, standalone unit
  171.91 €
Currently Unavailable
Order Code: Air21TNG4
3.8 11×
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iQtech Smartlife SS03 Zigbee Smoke sensor, Zigbee 3.0
Smoke Detector - battery-powered , detection reach 10 m, notifications via push notifications, battery indication, features: alarm, cover material plastic, compatible with Tuya and Smartlife, requires a central hub, app language options: Czech and English , compatible with Android and iOS
  32.90 €
Currently Unavailable
Order Code: iQ21TECH144
4.3
Watch Price/Availability
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 €
Currently Unavailable
Order Code: Shell23_024
 
In the category Smart Home Sensors & Detectors on Alza.de, we currently have a total of 336 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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