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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393 Results
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SAFE Door Guard Plus, white
Sensor - wireless magnetic open, shock and tilt detector for window and door security Powered by a replaceable battery that allows continuous operation for up to 4 years, white colour
-8 % off new 40.90 € New 44.90 €
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Unsealed 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
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Order Code: SAFEH26008
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SAFE Motion Cam (PhOD), white
Sensor - wireless dual PIR motion detector with photo camera, images in case of an alarm, or on request (PhOD), Motion detection up to 12 metres, which reliably ignores the movement of animals in the guarded area up to a weight of 18 kg and a height of 50 cm, Battery life for up to 4 years, Colour white
-18 % off new 121.90 € New 148.90 €
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Unsealed 1 pcs
Order Code: SAFEH26001
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GARNI 080Q Wireless outdoor air quality sensor
Sensor Wireless outdoor air quality sensor for the GARNI 3055 Arcus Wi-Fi weather station.
-28 % off new 58.90 € New 81.90 €
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Unsealed 1 pcs
Order Code: Garni22_03
4.6 16×
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QINGPING Bluetooth Alarm clock (Temperature & RH monitor) - green
Alarm Clock - Digital, power supply: battery, features: date
  20.89 €
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Unsealed 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
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Order Code: QGP003b
3.8 12×
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QINGPING Air Monitor 2 - white
Air Quality Meter - detects temperature, humidity, TVOC (volatile organic compounds), CO₂ (carbon dioxide), noise, dust particles, measurement range from 400 to 9999 ppm, temperature measurement from -10 to 60 °C, humidity measurement, battery-powered, visual signals, notifications via push notifications, display, features: hours, date and alarm clock, cover material plastic, input voltage 5 V, power cable included, standalone unit, app language: English, compatible with Android and iOS
-1 % off new 172.90 € New 174.90 €
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Unsealed 3 pcs
Order by midnight, get it at the AlzaBox in the morning.
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Order Code: QGP009b
5.0 2×
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EVOLVEO Alarmex Pro (ACSALMMST) wireless door/window detector
Door and Window Sensor - wireless, compatible with Manufacturer app, connect via WiFi 2,4 GHz, GSM and Radio Frequency, range of 100m, central unit required, supported OS: Android and iOS, application in Czech, application in Czech and English
-17 % off new 18.90 € New 22.90 €
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Unsealed 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
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Order Code: EVO22_09
1.0 1×
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EVOLVEO Alarmex Pro ( ACSALMOUS) wireless outdoor light and sound siren
Siren - closed system, area of use: security, OS supported: Android and iOS, compatible with Manufacturer app, power supply: Power plug, in Czech and English
-18 % off new 48.90 € New 59.90 €
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Unsealed 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
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Order Code: EVO22_04
4.7 25×
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AQARA Climate Sensor W100 (TH-S04D) - Zigbee and Thread
Sensor - sensor with 3.4-inch LCD display that monitors temperature and humidity
  33.90 €
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On the way > 5 pcs
Expected 20/11/2026
Order Code: Aqara25017
4.2 21×
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Netatmo Smart Carbon Monoxide Alarm
Gas Leak Detector - battery-powered, notifications via push notifications, signal volume 85 dB, battery indication, cover material plastic, compatible with Apple Home, standalone unit, app language options: Czech and English , compatible with Android, Windows and iOS
  88.90 €
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On the way > 5 pcs
Expected 09/12/2026
Order Code: NetA_21_01
4.3 8×
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Philips Hue Contact sensor White 2pcs
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, colour white, 2 pcs
  66.90 €
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On the way 3 pcs
Expected 19/11/2026
Order Code: PHLS23017
4.7 8×
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SONOFF AirGuard CO2 Matter Over Wi-Fi Air Quality Monitor SAWF-08P
Air Quality Meter - detects temperature, humidity, CO₂ (carbon dioxide), measurement range from 400 to 5000 ppm, gas detection sensitivity 50 ppm, temperature measurement from 0 to 50 °C with accuracy 0.5 °C, humidity measurement from 5 to 99 % with accuracy 3 %, acoustic, visual signals, notifications via push notifications, display, features: alarm, cover material plastic, operating temperature from -10 to 50 °C,, input voltage 5 V, power cable included, compatible with Apple Home, Google Home, Samsung SmartThings, eWeLink and Home Assistant, standalone unit, app language options: Czech and English, compatible with Android and iOS
  65.90 €
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On the way > 5 pcs
Expected 18/11/2026
Order Code: SNF2611
3.6 14×
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Netatmo 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
  99.90 €
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On the way > 5 pcs
Expected 12/12/2026
Order Code: Neta23_01
4.6 25×
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Shelly Gen3 H&T, battery operated temperature and humidity sensor with display, WiFi, white
Detector - Battery operated temperature and humidity sensor with display, WiFi, white
  32.90 €
On the way > 5 pcs
Expected 14/11/2026
Order Code: Shell24_010
4.2 28×
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AQARA Smoke Detector (SD-S01D) - Zigbee 3.0
Smoke Detector - battery-powered , reaction time 0,1 s, notifications via push notifications, battery indication, cover material plastic, operating temperature from 0 to 40 °C, operating humidity from 0 to 95 %, ingress protection IP20, requires a central hub, app language options: Czech and English , compatible with Android and iOS
Great price 36.90 €
On the way > 5 pcs
Expected 15/11/2026
Order Code: Aqara24011
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
  76.90 €
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Ordered on request
Order Code: FIBR01f
4.7 16×
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FIBARO Motion Sensor
Motion Sesnor , connect through WiFi 2,4 GHz and Bluetooth with detection motion, Lights and temperature, range: security, application in English, Czech, German and Slovak, power supply: Battery-Powered,
  69.90 €
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Ordered on request
Order Code: FIBR01b
4.6 7×
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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 €
Ordered on request
Order Code: IMXX2333
3.0 1×
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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
4.1 7×
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FIBARO Flood Sensor
Water Leak Detector - detects temperature and Water gas, battery-powered, connect via Bluetooth, standalone functional unit,, app with Czech language support, app with Czech and English language support for Android and iOS
  83.90 €
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Ordered on request
Order Code: FIBR01c
3.0 2×
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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
  28.90 €
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Ordered on request
Order Code: Imou23_40
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X-Sense SC07-MR RF Combined Smoke and CO Detector for SB550 Station
Smoke Detector - detects CO (carbon monoxide), gas, measurement range from 30 to 999 ppm, battery-powered , reaction time 1 s, acoustic, visual signals, notifications via push notifications, signal volume 85 dB, battery indication, display and protection against sabotage, features: test button, hours and alarm, cover material plastic, operating temperature from -4 to 38 °C, operating humidity from 0 to 85 %, ingress protection IP20, mounting kit included, requires a central hub, app language options: Czech and English , compatible with Android and iOS
BLACK FRIDAY -17 % 41.02 € 49.90 €
Currently Unavailable
Order Code: XSEN26004
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IMMAX NEO Smart temperature and humidity sensor with LCD, e-Ink, Zigbee 3.0
Temperature Sensor - humidity detection, temperature measurement from -9.9 to 60°C with 1°C accuracy, humidity measurement up to 99.9% with 5% accuracy, battery-powered, optical signal, push notifications, battery status indicator, reset function, plastic casing, IP20 protection, 3V input voltage, bracket included, works with Tuya, Lidl Home, Smartlife, TESLA Smart and Immax NEO PRO apps, central unit required for operation, app in English and Czech, compatible with Android and iOS
  28.44 €
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Ordered on request
Order Code: IMMX26051
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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
  40.90 €
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Ordered on request
Order Code: IGET26010
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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,
  19.48 €
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Ordered on request
Order Code: EMOS26068
 
In the category Smart Home Sensors & Detectors on Alza.at, we currently have a total of 393 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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