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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 359
Secutek Fire alarm and smoke detector VIP-909 EN14604 + free 9 V battery - Smoke Detector
Secutek Fire alarm and smoke detector VIP-909 EN14604 + free 9 V battery
199,-
In stock > 10 pcs at the supplier's
Smoke Detector - battery-powered , acoustic signals, signal volume 85 dB, battery indication, operating temperature to 50 °C, operating humidity from 10 to 90 %, input voltage 9 V,...
iQtech SmartLife CS01W Combo CO + Smoke Detector, Wi-Fi - Smoke Detector
iQtech SmartLife CS01W Combo CO + Smoke Detector, Wi-Fi
998,-
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Smoke Detector - detects gas, measurement range from 50 to 300 ppm, battery-powered , acoustic signals, signal volume 85 dB, cover material plastic, compatible with Tuya,...
FIBARO Flood Sensor - Water Leak Detector
FIBARO Flood Sensor
2,059,-
In stock 5 pcs
4 variants
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...
Smoot Air Leak Pro - Water Leak Detector
Smoot Air Leak Pro
449,-
In stock 4 pcs at the supplier's
Water Leak Detector - detects water gas, battery-powered, compatible with Apple Siri shortcuts and Tuya, connect via WiFi 2,4 GHz, battery indication, standalone functional unit,,...
Niceboy ION ORBIS Motion Sensor - Motion Sesnor
Niceboy ION ORBIS Motion Sensor
499,-
In stock 2 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Motion Sesnor , open system with detection motion compatible with Niceboy ION, range: home control, application in English, Czech and Slovak,
Netatmo Smart Indoor Air Quality Monitor - Air Quality Meter
Netatmo Smart Indoor Air Quality Monitor
3,199,-
From 147,- per month
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Buy at the price for both existing and new AlzaPlus+ members 1,919,-
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...
Elektrobock CN-L01 - Motion Sesnor
Elektrobock CN-L01
279,-
In stock 4 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Motion Sesnor , closed system with detection motion, range: lighting and electrical installation, power supply: Power plug,
EVOLVEO wireless water level detector for Alarmex/Sonix - Water Leak Detector
EVOLVEO wireless water level detector for Alarmex/Sonix
299,-
Currently Unavailable
Water Leak Detector - detects water gas, battery-powered, central unit required to function
View
iGET SECURITY EP9 - wireless water sensor for iGET M5-4G alarm - Detector
iGET SECURITY EP9 - wireless water sensor for iGET M5-4G alarm
499,-
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
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....
EVOLVEO WiFi EYE, smart magnetic PIR motion sensor - Motion Sesnor
EVOLVEO WiFi EYE, smart magnetic PIR motion sensor
242,-
In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
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...
Shelly Gas, CNG Gas Detector, Alarm: Flashing LED & Acoustic Signal, WiFi - Detector
Shelly Gas, CNG Gas Detector, Alarm: Flashing LED & Acoustic Signal, WiFi
1,528,-
In stock > 5 pcs at the supplier's
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....
GARNI 210T OneCare - Air Quality Meter
GARNI 210T OneCare
2,489,-
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
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 +...
Airthings Corentium Home 2 - Smart radon detector - Air Quality Meter
Airthings Corentium Home 2 - Smart radon detector
Great price 4,449,- Save 50,-
From 102,- per month
In stock > 5 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,...
Nedis WIFISA20CBK - Air Quality Meter
Nedis WIFISA20CBK
1,929,-
In stock 1 pcs at the supplier's
Air Quality Meter - detects temperature, humidity, CO₂ (carbon dioxide), mains power supply, acoustic, visual signals, notifications via push notifications, battery indication and...
Alecto COA3910 - Gas Leak Detector
Alecto COA3910
499,-
In stock > 5 pcs at the supplier's
Gas Leak Detector - detects CO (carbon monoxide), battery-powered, acoustic signals, signal volume 85 dB, battery indication, features alarm, cover material plastic, input voltage...
Somfy Indoor motion sensor - Motion Sesnor
Somfy Indoor motion sensor
2,049,-
Ordered on request
Motion Sesnor , connect through Radio frequency, open system with detection motion compatible with Manufacturer app, range: security, application in English and Czech, power...
Secutek CO detector VIP-910Q - Gas Leak Detector
Secutek CO detector VIP-910Q
299,-
In stock > 10 pcs at the supplier's
Gas Leak Detector - detects CO (carbon monoxide), battery-powered, acoustic signals, signal volume 85 dB, operating temperature from -10 to 40 °C, operating humidity from 30 to 90...
Flammable and Explosive Gas Detector SAFE 808L (Natural Gas) - Gas Leak Detector
Flammable and Explosive Gas Detector SAFE 808L (Natural Gas)
990,-
In stock 3 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Gas Leak Detector - detects natural gas, propane-butane, measurement range to 2500 ppm, mains power supply, reaction time 20 s, acoustic, visual signals, signal volume 85 dB,...
SAFEHOME Test spray for SAFE400 detectors - Accessory Kit
SAFEHOME Test spray for SAFE400 detectors
439,-
In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Accessory Kit - Spray, Operational test of the sensor and equipment, tests all CO detectors according to BS / CSN / EN 50291 and UL 2034 and all tobacco smoke detectors,...
WOOX R7081 Smart Vibration Sensor - Vibration Detector
WOOX R7081 Smart Vibration Sensor
499,-
Currently Unavailable
Vibration Detector - detects vibration gas, battery-powered, range: 70 m, compatible with Manufacturer app, connect via WiFi 2,4 GHz, battery indication, standalone functional...
View
EZVIZ Smoke detector T4C - Smoke Detector
EZVIZ Smoke detector T4C
919,-
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Smoke Detector - battery-powered , acoustic, visual signals, notifications via push notifications, signal volume 85 dB, battery indication, features: test button and temporary...
iGET SECURITY P9 - wireless water level detector for iGET SECURITY M3B and M2B - Water Leak Detector
iGET SECURITY P9 - wireless water level detector for iGET SECURITY M3B and M2B
Amazing Deal 179,- Save 20,-
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Water Leak Detector - detects water gas, battery-powered, range: 80 m, connect via GSM, battery indication, central unit required to function
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
619,-
In stock > 5 pcs at the supplier's
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...
Shelly Gen4 Flood, flood sensor, Bluetooth - Water Leak Detector
Shelly Gen4 Flood, flood sensor, Bluetooth
899,-
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
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,...
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