Cheap detectors
On this page you will find detectors at the lowest prices, more so all detectors ranked from the lowest to the highest price. It will be easier to see products that are now marked at their lowest price. The item with the lowest price in this category is Elektrobock CN11 Mini marked at 7.19 € incl. VAT. Is this what you’re looking for?
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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
174.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code:
PHLS25062set
Airthings Corentium Home (224 B/m3) - digital radon detector
Air Quality Meter - detects radon, battery-powered, display, features: memory, cover material plastic, operating temperature from 4 to 40 °C, battery included, standalone unit
Airthings Corentium Home (224 B/m3) - digital radon detector
Air Quality Meter - detects radon, battery-powered, display, features: memory, cover material plastic, operating temperature from 4 to 40 °C, battery included, standalone unit
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
187.50 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code:
Air25001
MDT Technologies KNX occupancy sensor 360°, 3 Pyro, brightness measurement, matt white
Sensor - The MDT presence detector is available in several versions, up to 4 pyrosensors and a high-resolution lens, white, ceiling installer, Channel Hkl, Reach 11m, max. range (Ø) presence 5m
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.
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155.12 €
Great price
193.90 €
Save 5.10 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code:
Air22TNG3
Airthings View Pollution - air quality monitor
Air Quality Meter is designed for indoor environments where it monitors humidity and temperature. 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 Pollution also communicates with IFTTT, Google Assistant and Amazon Alexa voice assistants.
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152.93 €
203.90 €
On the way > 5 pcs
Expected 15/09/2026
Order Code:
Air22TNG2
MDT Technologies KNX occupancy sensor 360° L3, temperature measurement, matt white
Sensor - Occupancy detector with 3 sensors, temperature sensor and integrated white LED orientation light, version for installation in hollow ceilings, temperature sensor, 3 sensors, ceiling installation
SAFE Motion Guard Outdoor, white
Motion Sesnor , connect through Radio frequency, closed system with detection motion compatible with Manufacturer app, range: security, application in English, Czech and German, power supply: Battery-Powered,
208.90 €
In stock 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code:
SAFEH26018
Ajax MotionCam HDR, black
Motion Sesnor , closed system with detection motion compatible with Ajax, range: security, application in English, Czech and Slovak, power supply: Battery-Powered,
Ajax MotionCam HDR, white
Motion Sesnor , closed system with detection motion compatible with Ajax, range: security, application in English, Czech and Slovak, power supply: Battery-Powered,
Airthings Wave plus - air quality, radon, humidity, temperature, VOC, CO2 and pressure sensor
Air Quality Meter - detects temperature, humidity, air pressure, TVOC (volatile organic compounds), radon, CO₂ (carbon dioxide), measurement range from 400 to 5000 ppm, deviation 30 ppm, temperature measurement with accuracy 0.1 °C, humidity measurement with accuracy 1 %, battery-powered, visual signals, notifications via push notifications, battery indication, cover material plastic, operating temperature from 4 to 40 °C, operating humidity to 85 %, battery and mounting kit included, standalone unit requires a central hub, app language: English, compatible with Android and iOS
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176.72 €
-5 % off new
220.90 €
New 234.90 €
Unsealed - in stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code:
Air21TNG2
Airthings Wave plus, black - air quality, radon, humidity, temperature, VOC, CO2 and pressure sensor
Air Quality Meter - detects temperature, humidity, air pressure, TVOC (volatile organic compounds), radon, CO₂ (carbon dioxide), measurement range from 400 to 5000 ppm, deviation 30 ppm, temperature measurement with accuracy 1 °C, humidity measurement with accuracy 3 %, battery-powered, visual signals, notifications via push notifications, battery indication, cover material plastic, operating temperature from 4 to 40 °C, operating humidity to 85 %, battery and mounting kit included, standalone unit requires a central hub, app language: English, compatible with Android and iOS
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187.92 €
234.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code:
Air23TNG1
Airthings Wave plus - air quality, radon, humidity, temperature, VOC, CO2 and pressure sensor
Air Quality Meter - detects temperature, humidity, air pressure, TVOC (volatile organic compounds), radon, CO₂ (carbon dioxide), measurement range from 400 to 5000 ppm, deviation 30 ppm, temperature measurement with accuracy 0.1 °C, humidity measurement with accuracy 1 %, battery-powered, visual signals, notifications via push notifications, battery indication, cover material plastic, operating temperature from 4 to 40 °C, operating humidity to 85 %, battery and mounting kit included, standalone unit requires a central hub, app language: English, compatible with Android and iOS
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187.92 €
234.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code:
Air21TNG2
Ajax MotionCam HDR (PhOD) Jeweller, white
Motion Sesnor , closed system with detection motion compatible with Ajax, range: security, application in English, Czech and Slovak, power supply: Battery-Powered,
Ajax MotionCam HDR (PhOD) Jeweller, black
Motion Sesnor , closed system with detection motion compatible with Ajax, range: security, application in English, Czech and Slovak, power supply: Battery-Powered,
![Ajax WaterStop [1/2] (8EU) white - Remote controlled water shut-off valve (1/2") - Water Leak Detector](https://image.alza.cz/products/AJAX23_024/AJAX23_024.jpg?width=190&height=190)
Ajax WaterStop [1/2] (8EU) white - Remote controlled water shut-off valve (1/2")
Water Leak Detector - detects Humidity and Water gas, battery-powered, range: 1,1 m, reaction time: 5s, compatible with Ajax, connection via radio waves, protection against sabotage, standalone functional unit,, app with Czech language support for Android, Windows and iOS
Airthings View Plus - complete air quality monitor
Air Quality Meter - detects temperature, humidity, air pressure, TVOC (volatile organic compounds), radon, CO₂ (carbon dioxide), dust particles, mains + battery-powered, visual signals, notifications via push notifications, battery indication and display, features: memory, power cable and battery included, standalone unit requires a central hub, app language: English, compatible with Android and iOS
SAFE Motion Cam Outdoor (PhOD), white
Motion Sesnor , connect through Radio frequency, closed system with detection motion compatible with Manufacturer app, range: security, application in English, Czech and German, power supply: Battery-Powered,
292.90 €
In stock 4 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code:
SAFEH26019
X-Sense FS121 (12+1) Set of 12 XS01-M Wireless Smoke Detectors with SB550 Central Unit
Smoke Detector - temperature measurement from 4 to 38 °C, humidity measurement, battery-powered , detection reach 500 m, reaction time 1 s, acoustic, visual signals, notifications via push notifications, signal volume 85 dB, battery indication and protection against sabotage, features: test button and alarm, cover material plastic, operating temperature from -4 to 38 °C, operating humidity from 0 to 85 %, ingress protection IP20, input voltage 3V, mounting kit included, requires a central hub, app language options: Czech and English , compatible with Android and iOS
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249.82 €
New arrival
293.90 €
In stock 4 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code:
XSEN26009
Airthings View Plus - complete air quality monitor
Air Quality Meter - detects temperature, humidity, air pressure, TVOC (volatile organic compounds), radon, CO₂ (carbon dioxide), dust particles, mains + battery-powered, visual signals, notifications via push notifications, battery indication and display, features: memory, power cable and battery included, standalone unit requires a central hub, app language: English, compatible with Android and iOS
-1 % off new
300.90 €
New 306.90 €
Unsealed - in stock 4 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code:
Air22TNG1
Airthings View Plus - complete air quality monitor
Air Quality Meter - detects temperature, humidity, air pressure, TVOC (volatile organic compounds), radon, CO₂ (carbon dioxide), dust particles, mains + battery-powered, visual signals, notifications via push notifications, battery indication and display, features: memory, power cable and battery included, standalone unit requires a central hub, app language: English, compatible with Android and iOS
306.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code:
Air22TNG1
Ajax MotionProtect Outdoor (8EU) ASP white (38197)
Motion Sesnor , connect through Radio frequency, closed system with detection motion and Human presence compatible with Ajax and Manufacturer app, range: security, application in English, Czech and Slovak, power supply: Battery-Powered,
![Ajax WaterStop [1] (8EU) white - Remote controlled water shut-off valve (1") - Water Leak Detector](https://image.alza.cz/products/AJAX23_026/AJAX23_026.jpg?width=190&height=190)
Ajax WaterStop [1] (8EU) white - Remote controlled water shut-off valve (1")
Water Leak Detector - detects Humidity and Water gas, battery-powered, range: 1,1 m, reaction time: 5s, compatible with Ajax, connection via radio waves, battery indication, standalone functional unit,, app with Czech language support for Android, Windows and iOS
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