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 BOSCH AKU Filio gas cylinder level indicator 0.603.684.000 (2 × AAA) marked at 179 Kč incl. VAT. Is this what you’re looking for?
All from 406
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 +...
EMOS GoSmart Air Quality Monitor E30300 with Wifi
2,490,-
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
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,...
Somfy Door and window sensor
2,499,-
In stock 1 pcs
Door and Window Sensor -, compatible with Manufacturer app, connect via Radio frequency, range of 200m, separately functional unit, supported OS: Android and iOS
Netatmo Smart Carbon Monoxide Alarm
2,599,-
In stock > 5 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...
Netatmo Smart Smoke Alarm
Great price
2,599,-
Save 191,-
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Smoke Detector - acoustic signals, notifications via push notifications, signal volume 85 dB, battery indication, features: alarm, cover material plastic, holder and mounting kit...
Ajax MotionProtect Curtain White
2,623,-
In stock > 5 pcs at the supplier's
Motion Sesnor , connect through Radio frequency with detection motion compatible with Ajax, range: security, application in English, power supply: Battery-Powered,
Ajax MotionProtect Curtain Black
2,623,-
In stock > 5 pcs at the supplier's
Motion Sesnor , connect through Radio frequency, closed system with detection motion compatible with Ajax, range: security, application in English, Czech, German and Slovak, power...
X-Sense FS31 (3+1) Set of 3 XS01-M Wireless Smoke Detectors with SB550 Base Station
2,699,-
On the way > 5 pcs
Expected 09/10/2026
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...
Ajax MotionProtect Plus White
2,768,-
In stock > 5 pcs at the supplier's
Motion Sesnor , connect through Radio frequency, open system with detection motion compatible with Ajax, range: security, application in English, power supply: Battery-Powered,
Ajax MotionProtect Plus Black
2,768,-
In stock > 5 pcs at the supplier's
Motion Sesnor , connect through Radio frequency, open system with detection motion compatible with Ajax, range: security, application in English, power supply: Battery-Powered,
SAFE SET FIRE BASIC - 1x SAFE50HUB-WRF, 2x SAFE10Y30-RF
2,790,-
In stock > 5 pcs at the supplier's
Security Kit - includes 1x central unit (SAFE50HUB-WRF) and 2 x fire detectors (SAFE10Y30-RF), The set offers extended smoke and fire protection for the home, Wirelessly connected...
Ajax CombiProtect White
2,842,-
In stock > 5 pcs at the supplier's
Motion Sesnor , connect through Radio frequency, open system with detection motion compatible with Ajax and Manufacturer app, range: security, application in English and Czech,...
Ajax CombiProtect Black
2,842,-
In stock > 5 pcs at the supplier's
Motion Sesnor , connect through Radio frequency, open system with detection motion and Glass breakage compatible with Ajax and Manufacturer app, range: security, application in...
GARNI 204 OneCare
2,849,-
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 -40 to 70 °C, humidity measurement from 1 to 99 %, mains + battery-powered,...
Eve Water Guard - Water Leak Detector - compatible with Thread
Great price
2,939,-
Save 60,-
On the way 2 pcs
Expected 30/09/2026
Add AlzaPlus+ and save instantly
2,351,-
Water Leak Detector - detects Water gas, mains power, sound level: 100dB, compatible with Apple Home, Apple Siri shortcuts and Samsung SmartThings, connect via Bluetooth,...
Somfy Interior motion sensor for Tahoma control unit
3,079,-
In stock 1 pcs
Motion Sesnor , connect through Radio frequency, open system with detection motion compatible with TaHoma, range: lighting, security and windows, doors, gates, power supply:...
SAFE Motion Cam (PhOD), white
-5 % off new
3,119,-
New 3,299,-
Unsealed - in stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Sensor - wireless dual PIR motion detector with photo camera, images in case of an alarm, or on request (PhOD), Motion detection up to 12 metres, which reliably ignores the...
Somfy Indoor siren
3,689,-
In stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Buy with code
ALZADNY15
3,136,-
The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart.
Získejte slevu 15 % s kódem ALZADNY15. Klikněte a kód se uplatní automaticky.
Siren - open system, area of use: security, compatible with Manufacturer app, power supply: Battery-Powered
Netatmo Smart Indoor Air Quality Monitor
3,199,-
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
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...
Somfy Smoke sensor for TaHoma control units white
3,199,-
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Smoke Detector - battery-powered , signal volume 85 dB, ingress protection IP20, input voltage 9 V, compatible with TaHoma, standalone unit, compatible with Android and Windows
SAFE Motion Cam (PhOD), white
3,299,-
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Sensor - wireless dual PIR motion detector with photo camera, images in case of an alarm, or on request (PhOD), Motion detection up to 12 metres, which reliably ignores the...
Homematic IP Rain Sensor - HmIP-SRD
3,890,-
In stock 4 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Buy with code
ALZADNY15
3,307,-
The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart.
Získejte slevu 15 % s kódem ALZADNY15. Klikněte a kód se uplatní automaticky.
Sensor The wireless rain sensor (HmIP-SRD) for outdoor use is part of the Homematic IP smart home system. The sensor with its high weather and weather protection offers a wide...
HEATIT Z-Smoke Multisensor 230VAC White, Z-Wave smoke sensor
3,959,-
In stock 1 pcs
Buy with code
ALZADNY15
3,365,-
The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart.
Získejte slevu 15 % s kódem ALZADNY15. Klikněte a kód se uplatní automaticky.
Smoke Detector - detects motion, temperature, mains power supply, detection reach 100 m, acoustic signals, signal volume 85 dB, features: test button and alarm, cover material...
Hütermann Pocket radiation meter - dosimeter
3,459,-
In stock 1 pcs at the supplier's
Detector - pocket-sized, digital radiation alarm, a nuclear accident alert, an atomic explosion, increased radioactivity, sound and vibration alarm, TFT display, Geiger-Müller...
No longer sold
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