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The result for detectors at several price levels is:

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Hundreds of categories, thousands of products, millions of details and user reviews for detectors. How can you make sense of all of this? Try our Alza Test, which guarantees an objective selection based on customers' experiences. How the products from detectors rank are based solely on various data and feedback from actual people who have purchased the products.

All detectors

Eve Motion (Matter - compatible with Apple, Google, SmartThings & Amazon Alexa)

10×

57.90 €

In stock > 5 pcs

Buy with code ALZADAYS20DE 46.32 € The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 20 % Rabatt mit dem Code ALZADAYS20DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt.

Motion Sesnor , connect through Bluetooth, closed system with detection motion and Light compatible with Apple Home, Google Home and Samsung SmartThings, range: lighting, security...

3 variants

Smoke Detector - detects temperature, temperature measurement from -20 to 100 °C, battery-powered , acoustic, visual signals, signal volume 85 dB, battery indication, features:...

Netatmo Smart Smoke Alarm

46×

107.90 €

In stock > 5 pcs

Smoke Detector - acoustic signals, notifications via push notifications, signal volume 85 dB, battery indication, features: alarm, cover material plastic, holder and mounting kit...

Airbi CO2AIR digital carbon dioxide meter

21×

81.90 €

In stock > 5 pcs

Detector - CO₂ (carbon dioxide) detection, measurement range from 400 to 2400 ppm, mains + battery power, reaction time 6 s, display, independently functional unit

iGET SECURITY P14 - wireless smoke detector for iGET SECURITY M3B and M2B

14×

20.90 €

In stock 3 pcs

Smoke Detector - battery-powered , reaction time 1 s, acoustic, visual signals, notifications via SMS, signal volume 85 dB, features: test button, cover material plastic, operating...

Shelly Blu Motion, Bluetooth

13×

28.90 €

In stock 4 pcs

Motion Sesnor , connect through WiFi 2,4 GHz, WiFi 5 GHz and Bluetooth, open system with detection motion compatible with Samsung SmartThings, range: home control, application in...

AQARA Presence Sensor FP2

52×

82.99 €

In stock > 5 pcs

Motion Sesnor , connect through WiFi 2,4 GHz and Bluetooth, closed system with detection motion and Light compatible with Apple Home, Google Home, IFTTT and Aqara Home, range:...

Honeywell Home R200C-N2, Connected Carbon Monoxide Detector and Detector, CO Alarm

14×

56.90 €

In stock > 5 pcs

Buy with code ALZADAYS10DE 51.21 € The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 10 % Rabatt mit dem Code ALZADAYS10DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt.

Gas Leak Detector - detects CO (carbon monoxide), smoke, measurement range from 3 to 330 ppm, gas detection sensitivity 28 ppm, battery-powered, detection reach 100 m, acoustic...

MOES Water Leakage Detector, Zigbee

11×

16.90 €

In stock > 10 pcs

Water Leak Detector - detects water gas, battery-powered, compatible with Tuya and MOES, battery indication, central unit required to function,, app with Czech language support,...

WOOX Smart Water Leak Sensor R7050

6×

15.90 €

In stock 5 pcs

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...

Eufy Motion Sensor - White

7×

32.90 €

In stock > 5 pcs

Buy with code ALZADAYS20DE 26.32 € The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 20 % Rabatt mit dem Code ALZADAYS20DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt.

Motion Sesnor , connect through WiFi 2,4 GHz, closed system with detection motion, range: security, application in English, power supply: Battery-Powered,

MOES CO Detector, Zigbee

9×

37.90 €

In stock > 5 pcs

Gas Leak Detector - detects CO (carbon monoxide), battery-powered, acoustic signals, notifications via push notifications, signal volume 85 dB, battery indication, features...

TESLA Smart Sensor Temperature and Humidity Display

93×

21.90 €

In stock > 10 pcs

Buy with code ALZADAYS10DE 19.71 € The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 10 % Rabatt mit dem Code ALZADAYS10DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt.

Sensor - on the wall and on the table, measures temperature and humidity, with a display, 2 AAA batteries, white colour, dimensions 61 × 61 × 23 mm (H×W×D)

iGET HOME XP1B - wireless PIR motion sensor for iGET HOME X1 and X5 alarm

11×

13.90 €

In stock 5 pcs

Motion Sesnor with detection motion, range: security, power supply: Battery-Powered,

Flammable gas leak detector - solid state sensor, 85dB siren, battery backup

11×

14.57 €

Currently Unavailable

Gas Leak Detector - detects natural gas, propane-butane, LPG, deviation 1500 ppm, gas detection sensitivity 2500 ppm, combined mains + battery-powered , acoustic signals, signal...

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Airthings Wave plus - air quality, radon, humidity, temperature, VOC, CO2 and pressure sensor

15×

289.90 €

In stock 3 pcs

Air Quality Meter - detects temperature, humidity, air pressure, TVOC (volatile organic compounds), radon, CO₂ (carbon dioxide), measurement range from 400 to 5000 ppm, deviation...

IMMAX NEO Smart Occupancy Sensor, Zigbee 3.0

7×

40.41 €

Ordered on request

Buy with code ALZADAYS30DE 28.29 € The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 30 % Rabatt mit dem Code ALZADAYS30DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt.

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:...

Meross Smart Presence Sensor

6×

26.90 €

In stock > 5 pcs

Sensor - dual detection technology, accurate presence detection even without motion, range up to 12 m, intelligent lighting automation, minimising false alarms, HomeKit...

SAFE - CO detector SAFE 10YDCO-PRO

4×

40.90 €

In stock > 5 pcs

Gas Leak Detector - detects CO (carbon monoxide), battery-powered, acoustic, visual signals, signal volume 85 dB, battery indication, operating temperature from -10 to 55 °C,...

Netatmo Smart Carbon Monoxide Alarm

20×

107.90 €

In stock 4 pcs

Gas Leak Detector - battery-powered, notifications via push notifications, signal volume 85 dB, battery indication, cover material plastic, compatible with Apple Home, standalone...

Honeywell Home R200ST-N2 Interconnected fire alarm detector - smoke (optical) and temperature princi

9×

46.90 €

In stock > 5 pcs

Buy with code ALZADAYS10DE 42.21 € The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 10 % Rabatt mit dem Code ALZADAYS10DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt.

Smoke Detector - temperature measurement from 0 to 70 °C, battery-powered , acoustic signals, signal volume 85 dB, features: test button, cover material plastic, operating...