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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410 Results
5.0 1×
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SONOFF SenseGuard Series SenseGuard DW Gen2 Zigbee Door/Window Sensor SNZB-04PR2
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 €
Currently Unavailable
Order Code: SNF2623
3.6 19×
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Meross Smart Temperature and Humidity Sensor MS100F
Sensor - temperature measurement in °C or °F, measurement of humidity in %, functionality only with the Meross Hub central unit, mobile apps, notifications, battery operation (CR2477), integrated solar panel for self-powering
  35.90 €
Currently Unavailable
Order Code: Mer24_10
4.6 13×
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Shelly Blu Motion, Bluetooth
Motion Sesnor , connect through Bluetooth, open system with detection motion compatible with Samsung SmartThings, range: home control, application in English, Czech, German, Slovak and Hungarian, power supply: Battery-Powered,
  28.90 €
On the way > 5 pcs
Expected 16/11/2026
Order Code: Shell23_034
4.3 7×
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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
3.5 2×
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QINGPING Motion & Light sensor, T version (Apple Homekit)
Motion Sesnor , connect through Bluetooth with detection motion and Lights compatible with Apple Home and Manufacturer app, range: lighting and security, application in English and Czech,
  12.90 €
Currently Unavailable
Order Code: QGP005a
3.5 2×
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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 €
Currently Unavailable
Order Code: iGt21012
3.4 6×
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MOES Light Sensor, Zigbee
Sensor - ZigBee connection (requires a gateway), real-time monitoring of light intensity, smart scenes via Tuya/MOES/Smart Life, automation of lighting at dusk, interactive brightness curve, up to 1 year battery life CR2032, discharge warning, easy installation with adhesive tape, compact design
  16.90 €
Currently Unavailable
Order Code: Moes2509
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Ubiquiti UniFi SuperLink Entry
Door and Window Sensor - wireless, compatible with Manufacturer app, connect via Radio frequency, protection against sabotage, range of 2000m, central unit required, supported OS: Android, application in English
Great price 38.90 €
Currently Unavailable
Order Code: Ubiq26355
3.0 2×
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MOES Human Presence Sensor + Light Sensor, Zigbee
Motion Sesnor , connect through WiFi 2,4 GHz, open system with detection motion compatible with Tuya, Smartlife and MOES, range: security, power supply: USB,
  35.90 €
Currently Unavailable
Order Code: Moes2507
5.0 1×
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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 €
Currently Unavailable
Order Code: EVO22_08
4.2 6×
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iQtech SmartLife TH01 Wi-Fi Temperature and Humidity Sensor with Display
Sensor iQtech® SmartLife TH01 Wi-Fi Temperature and Humidity Sensor with Display
  20.13 €
Currently Unavailable
Order Code: iQtech23_02
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WiZ Contact sensor 2pack
Door and Window Sensor - wireless, compatible with Google Home and Manufacturer app, connect via WiFi 2,4 GHz, battery indication, night orientation light and adjustable sensitivity, range of 20m, separately functional unit, supported OS: Android and iOS, application in Czech, application in Czech and English
  49.87 €
Currently Unavailable
Order Code: WiZ25002
5.0 1×
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Honeywell adapter for HR90, HR92, HR30 to Herz and Comap M28x1,5 valves
Heating Set - adapter for installation of Honeywell thermostatic heads on Herz and Comap radiator valves with M28 × 1.5 thread (HR92, HR90, HR30)
  8.83 €
Currently Unavailable
Order Code: HN21Well20
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Ajax WaterStop [3/4] (8EU) black - Remote controlled water shut-off valve (3/4")
Water Leak Detector - detects Humidity and Water gas, battery-powered, range: 1100 m, reaction time: 5s, compatible with Ajax, connection via radio waves, protection against sabotage, central unit required to function,, app with Czech language support for Android, Windows and iOS
  287.06 €
Currently Unavailable
Order Code: AJAX23_027
2.8 9×
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Niceboy ION ORBIS Meteo+ Sensor
Sensor - measures the temperature and humidity in the room, accuracy of 0.3 °C, ranging from -20 to +60 °C, digital display, displays the temperature, humidity, signal level, time and battery status, supports ZigBee 3.0 protocols, Bluetooth and MESH, compatible with Google Assistant, Niceboy ION app
  32.90 €
Currently Unavailable
Order Code: NCB23_005
4.5 4×
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iGET SECURITY P10 - wireless vibration detector for iGET SECURITY M3B and M2B
Vibration Detector - detects vibration gas, battery-powered, range: 80 m, connect via GSM, battery indication, central unit required to function
  8.29 €
Currently Unavailable
Order Code: NU105t
5.0 5×
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Shelly-BYPASS
Switching Relay - Shelly Bypass, compatible with Shelly 1L and Shelly Dimmer 2
  4.89 €
Currently Unavailable
Order Code: SHELLa2118
3.8 7×
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iGET SECURITY P9 - wireless water level detector for iGET SECURITY M3B and M2B
Water Leak Detector - detects Water gas, battery-powered, range: 80 m, connect via GSM, battery indication, central unit required to function
  8.89 €
Currently Unavailable
Order Code: NU105r
4.6 12×
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iGET HOME XP1B - wireless PIR motion sensor for iGET HOME X1 and X5 alarm
Motion Sesnor with detection motion, range: security, power supply: Battery-Powered,
  10.90 €
Currently Unavailable
Order Code: iGET23_013
4.0 6×
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iGET SECURITY EP9 - wireless water sensor for iGET M5-4G alarm
Detector water detection sensor for iGET SECURITY M5 alarm. It is used for water detection in bathrooms, technical rooms, tanks, etc., wherever there is a risk of water flooding. As soon as the detection plate detects water, the transmitter informs the alarm. Protection against sabotage, highest transmission security 256bit, very long battery life of 5 years, the alarm constantly monitors the activity of this sensor, also a signal, battery percentage and more.
  20.90 €
Currently Unavailable
Order Code: iGt21017
4.8 31×
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iGET SECURITY M3P1 - wireless PIR motion detector for iGET SECURITY M3 and M4
Motion Sesnor , connect through Radio frequency, open system with detection motion, range: security, power supply: Battery-Powered,
  from  18.10 €
Currently Unavailable
Order Code: NU106b
4.8 5×
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iGET SECURITY P2 - wired PIR motion detector for iGET SECURITY M3B and M2B
Motion Sesnor , connect through Radio frequency, open system with detection motion, range: security, power supply: Power plug,
  16.90 €
Currently Unavailable
Order Code: NU105d
4.7 23×
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EVOLVEO wireless PIR motion sensor for Alarmex/Sonix with tamper protection
Motion Sesnor , closed system with detection motion, range: security, power supply: Battery-Powered,
  from  28.91 €
Currently Unavailable
Order Code: RY203g
4.2 9×
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EVOLVEO wireless vibration detector for Alarmex/Sonix
Vibration Detector - detects Opening windows and doors and vibration gas,, range: 40 m, standalone functional unit
  14.90 €
Currently Unavailable
Order Code: RY202f3
In the category Smart Home Sensors & Detectors on Alza.de, we currently have a total of 410 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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