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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
All from 375
Elektrobock LX118 - Motion Sesnor
Elektrobock LX118
-6 % off new 279,- New 299,-
Unsealed - in stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Motion Sesnor with detection motion, range: electrical installation, power supply: Power plug,
Added to cart
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Meross Smart Presence Sensor - Sensor
Meross Smart Presence Sensor
-26 % off new 739,- New 999,-
Unsealed - in stock 2 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Buy with code ALZADNY20 591,- The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Získejte slevu 20 % s kódem ALZADNY20. Klikněte a kód se uplatní automaticky.
Sensor - dual detection technology, accurate presence detection even without motion, range up to 12 m, intelligent lighting automation, minimising false alarms, HomeKit...
Added to cart
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Netatmo Smart Carbon Monoxide Alarm - Gas Leak Detector
Netatmo Smart Carbon Monoxide Alarm
-15 % off new 2,209,- New 2,599,-
Unsealed - in stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Gas Leak Detector - battery-powered, notifications via push notifications, signal volume 85 dB, battery indication, cover material plastic, compatible with Apple Home, standalone...
Added to cart
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Honeywell Home R200ST-N2 Interconnected fire alarm detector - smoke (optical) and temperature princi - Smoke Detector
Honeywell Home R200ST-N2 Interconnected fire alarm detector - smoke (optical) and temperature princi
-11 % off new 1,019,- New 1,148,-
Unsealed - in stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Buy with code ALZADNY10 917,- The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Získejte slevu 10 % s kódem ALZADNY10. Klikněte a kód se uplatní automaticky.
Smoke Detector - temperature measurement from 0 to 70 °C, battery-powered , acoustic signals, signal volume 85 dB, features: test button, cover material plastic, operating...
Added to cart
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Airthings Wave mini - air quality, humidity, temperature and air chemicals sensor - Air Quality Meter
Airthings Wave mini - air quality, humidity, temperature and air chemicals sensor
-20 % off new 1,619,- New 2,049,-
As good as new - in stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Air Quality Meter - detects temperature, humidity, TVOC (volatile organic compounds), temperature measurement with accuracy 1 °C, humidity measurement with accuracy 3 %,...
Added to cart
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EMOS GoSmart Carbon Monoxide Detector TCS0101W, Wi-Fi - Gas Leak Detector
EMOS GoSmart Carbon Monoxide Detector TCS0101W, Wi-Fi
-6 % off new 779,- New 829,-
Unsealed - in stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Buy with code ALZADNY20 623,- The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Získejte slevu 20 % s kódem ALZADNY20. Klikněte a kód se uplatní automaticky.
Gas Leak Detector - detects CO (carbon monoxide), battery-powered, acoustic, visual signals, notifications via push notifications, signal volume 85 dB, battery indication, features...
Added to cart
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iGET SECURITY P1v2 - wireless PIR motion detector - Motion Sesnor
iGET SECURITY P1v2 - wireless PIR motion detector
-37 % off new 239,- New 385,-
As good as new - in stock 2 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Motion Sesnor accessories for iGET SECURITY M3B and M2B alarm system - Wireless PIR motion detector for monitoring movement in the room
Added to cart
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Mi Door and Window Sensor 2 - Door and Window Sensor
Mi Door and Window Sensor 2
-13 % off new 259,- New 299,-
Unsealed - in stock 2 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Door and Window Sensor - wireless, compatible with Xiaomi Home, connect via Bluetooth, integrated daylight sensor, central unit required, supported OS: Android and iOS, application...
Added to cart
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EMOS GoSmart Air Quality Monitor E30300 with Wifi - Air Quality Meter
EMOS GoSmart Air Quality Monitor E30300 with Wifi
-4 % off new 2,389,- New 2,490,-
Unsealed - in stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Buy with code ALZADNY20 1,911,- The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Získejte slevu 20 % s kódem ALZADNY20. Klikněte a kód se uplatní automaticky.
Air Quality Meter - detects temperature, humidity, CO₂ (carbon dioxide), measurement range from 400 to 5000 ppm, temperature measurement from 0 to 50 °C with accuracy 0.1 °C,...
Added to cart
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Eve Door & Window (Matter - compatible with Apple, Google, SmartThings & Amazon Alexa) - Door and Window Sensor
Eve Door & Window (Matter - compatible with Apple, Google, SmartThings & Amazon Alexa)
-20 % off new 1,119,- New 1,399,-
As good as new - in stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Buy with code ALZADNY25 839,- The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Získejte slevu 25% s kódem ALZADNY25.
Door and Window Sensor - wireless, compatible with Apple Home, Google Home and Samsung SmartThings, connect via Bluetooth, central unit required, supported OS: Android and iOS,...
Added to cart
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Bentech Gasman LCD standalone fire alarm and gas leak detector - Gas Leak Detector
Bentech Gasman LCD standalone fire alarm and gas leak detector
469,-
Unsealed - in stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Gas Leak Detector - detects natural gas, propane-butane, mains power supply, detection reach 30 m, reaction time 20 s, acoustic signals, battery indication, features alarm, cover...
Added to cart
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Airthings View Radon - Air Quality Monitor - Air Quality Meter
Airthings View Radon - Air Quality Monitor
-11 % off new 4,359,- New 4,899,-
From 100,- per month
As good as new - in stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
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....
Added to cart
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ERMENRICH Gas detector NG40 84092 - Gas Leak Detector
ERMENRICH Gas detector NG40 84092
-5 % off new 2,069,- New 2,199,-
Unsealed - in stock 2 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Gas Leak Detector - measurement range from 0 to 10000 ppm, battery power, acoustic, optical signalling, battery status indication and display, reset and alarm functions, operating...
Added to cart
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BOT Smart gas detector WiFi GS4 - Gas Leak Detector
BOT Smart gas detector WiFi GS4
-19 % off new 589,- New 729,-
As good as new - in stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Buy with code ALZADNY10 530,- The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Získejte slevu 10 % s kódem ALZADNY10. Klikněte a kód se uplatní automaticky.
Gas Leak Detector - mains power supply, detection reach 20 m, acoustic signals, notifications via push notifications, signal volume 90 dB, display, features alarm, cover material...
Added to cart
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FIBARO Flood Sensor - Water Leak Detector
FIBARO Flood Sensor
-15 % off new 1,749,- New 2,059,-
Unsealed - in stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
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...
Added to cart
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IMMAX NEO Smart PIR sensor 2in1 Zigbee 3.0 - Motion Sesnor
IMMAX NEO Smart PIR sensor 2in1 Zigbee 3.0
-6 % off new 419,- New 449,-
Unsealed - in stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Motion Sesnor , open system with detection motion and Light compatible with Apple Siri shortcuts, Tuya, Lidl Home, Smartlife, Nedis SmartLife, ETA SMART, Tesla Smart and Immax NEO...
Added to cart
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EVOLVEO WiFi SMOKE, smart smoke detector - Smoke Detector
EVOLVEO WiFi SMOKE, smart smoke detector
-7 % off new 719,- New 779,-
As good as new - in stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Smoke Detector - battery-powered , detection reach 60 m, acoustic signals, notifications via push notifications, signal volume 85 dB, battery indication, features: test button and...
Added to cart
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GARNI 210T OneCare - Air Quality Meter
GARNI 210T OneCare
-26 % off new 1,819,- New 2,489,-
Unsealed - in stock 1 pcs
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 +...
Added to cart
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Airthings Corentium Home 2 - Smart radon detector - Air Quality Meter
Airthings Corentium Home 2 - Smart radon detector
-1 % off new 4,399,- New 4,449,-
From 101,- per month
Unsealed - in stock 2 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Air Quality Meter - detects temperature, humidity, radon, battery-powered, visual signals, notifications via push notifications, display, operating temperature from 4 to 40 °C,...
Added to cart
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Honeywell Home R200H-N2 Interconnected fire alarm detector - temperature principle, battery operated - Temperature Sensor
Honeywell Home R200H-N2 Interconnected fire alarm detector - temperature principle, battery operated
-6 % off new 749,- New 799,-
Unsealed - in stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Buy with code ALZADNY10 674,- The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Získejte slevu 10 % s kódem ALZADNY10. Klikněte a kód se uplatní automaticky.
Temperature Sensor - interconnected fire detector, battery powered
Added to cart
- +
iGET SECURITY EP1 - wireless PIR motion sensor for iGET M5-4G alarm - Detector
iGET SECURITY EP1 - wireless PIR motion sensor for iGET M5-4G alarm
-22 % off new 479,- New 619,-
Unsealed - in stock 2 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
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...
Added to cart
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Homematic IP Smoke detector HmIP-SWSD-2 - Smoke Detector
Homematic IP Smoke detector HmIP-SWSD-2
-12 % off new 1,379,- New 1,571,-
Unsealed - in stock 2 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Buy with code ALZADNY5 1,310,- The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Získejte slevu 5 % s kódem ALZADNY5. Klikněte a kód se uplatní automaticky.
Smoke Detector - battery-powered , detection reach 40 m, acoustic, visual signals, signal volume 85 dB, battery indication, features: test button, cover material plastic, operating...
Added to cart
- +
EVOLVEO SecuPro wireless PIR motion sensor - Motion Sesnor
EVOLVEO SecuPro wireless PIR motion sensor
-8 % off new 459,- New 499,-
Unsealed - in stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Motion Sesnor , connect through WiFi 2,4 GHz and WiFi 5 GHz with detection motion compatible with Tuya, range: security, application in English, Czech and Slovak, power supply:...
Added to cart
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Airthings Wave Enhance - Air Quality Meter
Airthings Wave Enhance
-14 % off new 3,349,- New 3,899,-
From 154,- per month
As good as new - in stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Air Quality Meter - detects temperature, humidity, air pressure, TVOC (volatile organic compounds), CO₂ (carbon dioxide), noise, battery-powered, visual signals, notifications via...
Added to cart
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