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Detectors reviews and tests

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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.

166 Results
4.7
Honeywell Home R200H-N2 Interconnected fire alarm detector - temperature principle, battery operated
Temperature Sensor - interconnected fire detector, battery powered
32.90 €
Buy
In stock 4 pcs
Order Code: HNW22_03
3.9 27×
EVOLVEO WiFi SMOKE, smart smoke detector
Smoke Detector - battery-powered , detection reach 60 m, acoustic signals, notifications via push notifications, signal volume 85 dB, battery indication, features: test button and temporary shutdown, operating temperature from -15 to 55 °C, operating humidity up to 95 %, battery and mounting kit included, compatible with Smartlife, standalone unit, app language options: Czech and English , compatible with Android and iOS
31.90 €
Buy
In stock > 5 pcs
Order Code: EVO23_022
4.1
AQARA Presence Sensor FP1E (PS-S03D), Zigbee
Motion Sesnor , connect through Radio frequency, open system with detection motion compatible with Aqara Home and Manufacturer app, range: lighting and security, application in English, Czech and Slovak, power supply: Power plug and USB,
49.99 €
Buy
In stock > 5 pcs
Order Code: Aqara24009
4.2
Airthings View Radon - Air Quality Monitor
Air Quality Meter is designed for indoor environments where it monitors humidity, temperature and the amount of radon in the air. You use batteries or a USB cable to power it. Easily connect the air detector to the app via Wi-Fi or HUB using Airthings Smartlink. The app is compatible with both Android and iOS operating systems. Airthings View Radon also communicates with IFTTT, Google Assistant and Amazon Alexa voice assistants.
203.90 €
Buy
On the way 3 pcs
Expected 12/05/2026
Order Code: Air22TNG3
5.0
Solight CO flue gas detector, 85 dB
Gas Leak Detector - detects CO (carbon monoxide), measurement range from 50 ppm, gas detection sensitivity 50 ppm, battery-powered, acoustic, visual signals, signal volume 85 dB, battery indication and display, features alarm, cover material plastic, operating temperature from 5 to 40 °C, operating humidity from 20 to 90 %, ingress protection IP20, battery included, standalone unit
Discounted -15 % 14.90 € 17.70 €
Buy
In stock > 10 pcs
Order Code: Solight25092
5.0
Eve Water Guard - Water Leak Detector - compatible with Thread
Water Leak Detector - detects water gas, mains power, sound level: 100dB, compatible with Apple Home, Apple Siri shortcuts and Samsung SmartThings, connect via Bluetooth, standalone functional unit, app with English language support for iOS
94.90 €
Buy
In stock 1 pcs
Order Code: Eve22_001
5.0
Tellur WiFi Smart Flood Sensor, AAA, white
Water Leak Detector - detects water gas, battery-powered, range: 1 m, compatible with Google Home and Manufacturer app, connect via WiFi 2,4 GHz, battery indication, standalone functional unit, central unit required to function, app with English language support for Android
28.90 €
Buy
In stock 2 pcs
Order Code: TLLR2102
4.1
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
82.90 €
Buy
In stock 4 pcs
Order Code: FIBR01c
3.9 10×
Niceboy ION ORBIS Motion Sensor
Motion Sesnor , open system with detection motion compatible with Niceboy ION, range: home control, application in English, Czech and Slovak,
Buy with code ALZADAYS40DE The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 40 % Rabatt mit dem Code ALZADAYS40DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 12.54 €
20.90 €
Buy
In stock 1 pcs
Order Code: NCB23_006
3.8 46×
Netatmo Smart Indoor Air Quality Monitor
Air Quality Meter - detects temperature, humidity, noise, measurement range from 0 to 5000 ppm, deviation 50 ppm, gas detection sensitivity 50 ppm, temperature measurement from 0 to 50 °C with accuracy 0.3 °C, humidity measurement with accuracy 3 %, mains power supply, visual signals, cover material metal, operating temperature from 0 to 50 °C,, ingress protection IP20, input voltage 5 V, power cable included, standalone unit, app language: English, compatible with Android and iOS
Buy with code ALZADAYS40DE The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 40 % Rabatt mit dem Code ALZADAYS40DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 75.54 €
125.90 €
Buy
In stock > 5 pcs
Order Code: NET001e
4.4
EVOLVEO wireless water level detector for Alarmex/Sonix
Water Leak Detector - detects water gas, battery-powered, central unit required to function
19.90 €
Currently Unavailable
Order Code: RY202f
4.0
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.
21.90 €
Buy
In stock > 5 pcs
Order Code: iGt21017
4.0
EVOLVEO WiFi EYE, smart magnetic PIR motion sensor
Motion Sesnor , connect through WiFi 2,4 GHz, closed system with detection motion compatible with Tuya, range: security, application in English, Czech, German, Slovak and Hungarian, power supply: Battery-Powered,
9.78 €
Buy
In stock > 5 pcs
Order Code: EVO23_021
4.0
Shelly Gas, CNG Gas Detector, Alarm: Flashing LED & Acoustic Signal, WiFi
Detector - Shelly GAS is a compact and highly sensitive CNG natural gas detector, bringing additional security for your home and family. Alarm: flashing LED & acoustic signal. Alarm sensitivity: 6% LEL, noise level: ?70dB. Smart switching: Yes. Local and remote control: Yes. Dimensions: 89.5mm x 89.5mm x 38mm. Connection not included. Mobile app available in Czech, Slovak, English and other languages.
61.90 €
Buy
Ordered on request
Order Code: SHELLa0009
3.9
GARNI 210T OneCare
Air Quality Meter - detects temperature, humidity, dust particles, temperature measurement from -10 to 50 °C with accuracy 0.8 °C, humidity measurement with accuracy 5 %, mains + battery-powered, acoustic, visual signals, battery indication and display, cover material plastic, power cable included, compatible with Tuya and Smartlife, standalone unit, compatible with Android and iOS
99.90 €
Buy
In stock 2 pcs
Order Code: GARNI19013
4.5
Airthings Corentium Home 2 - Smart radon detector
Air Quality Meter - detects temperature, humidity, radon, battery-powered, visual signals, notifications via push notifications, display, operating temperature from 4 to 40 °C, operating humidity to 85 %, battery included, standalone unit requires a central hub
Great price 180.77 €
Buy
On the way > 5 pcs
Expected 27/04/2026
Order Code: Air25001
4.5
MOES Mini CO Detector, grey
Gas Leak Detector - measurement range from 0 to 1000 ppm, deviation 100 ppm, reaction time 2 s, acoustic signals, battery indication and display, features alarm, cover material plastic, operating temperature from -10 to 50 °C,, input voltage 24 V, power cable included, standalone unit
39.90 €
Currently Unavailable
Order Code: Moes2512
4.5
MOES Mini CO Detector, orange
Gas Leak Detector - measurement range from 0 to 1000 ppm, reaction time 2 s, acoustic signals, battery indication and display, features alarm, cover material plastic, operating temperature from -10 to 50 °C,, input voltage 24 V, power cable included, standalone unit
39.90 €
Currently Unavailable
Order Code: Moes2513
4.5
Nedis WIFISA20CBK
Air Quality Meter - detects temperature, humidity, CO₂ (carbon dioxide), mains power supply, acoustic, visual signals, notifications via push notifications, battery indication and display, features: hours and date, operating temperature from -10 to 40 °C, power cable and mounting kit included, compatible with Smartlife and Nedis SmartLife, standalone unit, compatible with Android and iOS
77.90 €
Currently Unavailable
Order Code: Nedis24065
4.0
WOOX R7081 Smart Vibration Sensor
Vibration Detector - detects vibration gas, battery-powered, range: 70 m, compatible with Manufacturer app, connect via WiFi 2,4 GHz, battery indication, standalone functional unit,, app with Czech language support, app with Czech and English language support for Android and iOS
Discounted -16 % 20.90 € 24.90 €
Currently Unavailable
Order Code: WOOX22_02
3.8
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
Discounted -55 % 5.69 € 12.90 €
Buy
In stock > 5 pcs
Order Code: NU105r
3.7 24×
iGET SECURITY EP1 - wireless PIR motion sensor for iGET M5-4G alarm
Detector PIR motion sensor for iGET SECURITY M5 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. Special magnetic holder for attachment containing trigger.
27.90 €
Buy
In stock > 5 pcs
Order Code: iGt21015
5.0
Shelly Gen4 Flood, flood sensor, Bluetooth
Water Leak Detector - detects Humidity and water gas, battery-powered, range: 2 m, sound level: 50dB, compatible with Apple Home, Google Home, Manufacturer app and Home Assistant, connect via WiFi 2,4 GHz and Bluetooth, battery indication, standalone functional unit,, app with Czech language support, app with Czech and English language support for Android, Windows and iOS
36.90 €
Buy
In stock > 5 pcs
Order Code: Shell25034
5.0
Homematic IP Smoke detector HmIP-SWSD-2
Smoke Detector - battery-powered , detection reach 40 m, acoustic, visual signals, signal volume 85 dB, battery indication, features: test button, cover material plastic, operating temperature from 5 to 30 °C, ingress protection IP20, input voltage 3V, mounting kit included, requires a central hub, app language options: Czech and English , compatible with Android and iOS
Buy with code ALZADAYS10DE 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. 57.16 €
63.51 €
Buy
In stock 1 pcs
Order Code: Home25001

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