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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
4.6 143×
SONOFF ZB SNZB-02D SMART Temperature & Humidity sensor
Sensor - temperature measurement in °C or F, measurement of humidity in %, 2.5" display, data recovery every 5 seconds, Zigbee 3.0, mobile apps, notifications, support for voice assistants, battery operation (CR2450)
15.90 €
Buy
On the way 1 pcs
Expected 18/07/2026
Order Code: SNFa073
4.8 29×
SONOFF SNZB-05P Zigbee Water Leak Sensor & Detection Cable
Sensor - protection against water damage in your home, Zigbee, email alerts, SMS or mobile phone notifications, on a CR2477 battery (battery not included), degree of protection IP67, Zigbee2MQTT and Home Assistant support, cable included for extended detection range
20.90 €
Buy
On the way > 5 pcs
Expected 30/09/2026
Order Code: SNFa110
4.8 17×
SONOFF SNZB-04P Zigbee Door/Window Sensor
Door and Window Sensor - wireless, compatible with Samsung SmartThings, IFTTT and eWeLink, range of 30m, central unit required, supported OS: Android and iOS, application in Czech, application in Czech and English
16.90 €
Buy
On the way > 5 pcs
Expected 30/09/2026
Order Code: SNFa104
4.9 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
34.90 €
Buy
On the way > 5 pcs
Expected 31/07/2026
Order Code: SwBot2410
4.1 12×
SwitchBot Meter Pro (CO2)
Sensor - Bluetooth wireless connectivity, real-time data in the SwitchBot app, Android and iOS support, Google Assistant and Amazon Alexa - Matter standard only works with the hub
77.90 €
Buy
On the way > 5 pcs
Expected 31/07/2026
Order Code: SwBot2411
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
38.90 €
Buy
On the way 1 pcs
Expected 27/07/2026
Order Code: PHLS23015
4.6 13×
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,
19.90 €
Buy
On the way > 5 pcs
Expected 24/07/2026
Order Code: Shell23_034
4.9 11×
SONOFF IP65 Zigbee LCD Smart Thermometer (Probe Version) SNZB-02LD
Digital Thermometer – IP65 waterproof design with 1.5m probe, temperature measurement even in liquids and confined spaces, 2.2″ LCD display, accuracy ±0.2 °C, measurement history up to 180 days, smart scenes and notifications, compatible with voice assistants, Zigbee 3.0 compatible
31.90 €
Buy
On the way > 5 pcs
Expected 30/09/2026
Order Code: SNFa117
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
46.90 €
Buy
On the way 1 pcs
Expected 22/07/2026
Order Code: EVO22_08
4.6 16×
NEDIS WIFIRC10CBK
TV Remote Control - universal, compatible with set-top box, air conditioner, range 5 m, infra-red transmission technology, compatible app
23.47 €
Buy
On the way 2 pcs
Expected 22/07/2026
Order Code: NESDV075a1
4.7 13×
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 €
Buy
On the way 3 pcs
Expected 29/07/2026
Order Code: FIBR01f
4.0
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
206.80 €
Buy
On the way 3 pcs
Expected 27/07/2026
Order Code: Neta2401
Philips Hue Enrave S white + Philips Hue Motion Sensor
Ceiling Light - LED, dimmable, luminous flux 1220 lm, adjustable light temperature, connects via Bluetooth, control via app in Czech, compatible with Apple Home, height 6,6 cm, width 26,1 cm, length 26,1 cm, IP20
Discounted -8 % 155.20 € 169.90 €
Currently Unavailable
Order Code: PHLS25062set
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
34.90 €
Buy
Ordered on request
Order Code: Woox24006
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,
21.49 €
Buy
Ordered on request
Order Code: EMOS24145
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,
40.63 €
Buy
Ordered on request
Order Code: IMXX2333
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
42.90 €
Buy
Ordered on request
Order Code: Imou23_40
28.42 €
Buy
Ordered on request
Order Code: IMMX26051
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
24.35 €
Buy
Ordered on request
Order Code: IMMX26050
EMOS Microwave sensor (motion sensor) IP20, 1200 W, 360°, built-in
Motion Sesnor with detection motion, range: lighting, power supply: Power plug,
19.46 €
Buy
Ordered on request
Order Code: EMOS26068
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
27.18 €
Buy
Ordered on request
Order Code: EMOS24054
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
57.90 €
Buy
Ordered on request
Order Code: Nedis23_002
4.8 107×
Honeywell R200C-2, Carbon monoxide detector and detector, CO Alarm
Gas Leak Detector - detects CO (carbon monoxide), smoke, measurement range from 3 to 330 ppm, gas detection sensitivity 28 ppm, battery-powered, acoustic signals, signal volume 85 dB, features test button, cover material plastic, operating temperature from -10 to 40 °C, operating humidity from 25 to 95 %, ingress protection IP44, input voltage 3V, battery included, standalone unit
Discounted -7 % 31.40 € 33.90 €
Currently Unavailable
Order Code: HNW22_01
4.0 13×
Meross Smart Door and Window Sensor
Door and Window Sensor - wireless, 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
13.90 €
Currently Unavailable
Order Code: Mer24_12
 
In the category Smart Home Sensors & Detectors on Alza.de, 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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