Refresh the page

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 iGET SECURITY P9 - wireless water level detector for iGET SECURITY M3B and M2B marked at 6.79 € incl. VAT. Is this what you’re looking for?

Honeywell Home R200C-N2, Connected Carbon Monoxide Detector and Detector, CO Alarm - Gas Leak Detector

Honeywell Home R200C-N2, Connected Carbon Monoxide Detector and Detector, CO Alarm

In stock > 5 pcs

Gas Leak Detector - detects CO (carbon monoxide), smoke, measurement range from 3 to 330 ppm, gas detection sensitivity 28 ppm, battery-powered, detection reach 100 m, acoustic...

Added to cart

- +

Eufy Security Water and Freeze Sensor - Water Leak Detector

Eufy Security Water and Freeze Sensor

Water Leak Detector - detects water gas, battery-powered, range: 200 m, compatible with Google Home and Manufacturer app, connect via WiFi 2,4 GHz, central unit required to...

Added to cart

- +

SAFE Motion Guard, white - Sensor

SAFE Motion Guard, white

In stock > 5 pcs

Sensor - wireless motion detector equipped with dual PIR sensor detecting motion at a distance of up to 12 meters, PET immunity up to a weight of 18 kg and 50 cm height, The...

Added to cart

- +

Combined Detector of CO, Flammable and Explosive Gases SAFE 808COM - Gas Leak Detector

Combined Detector of CO, Flammable and Explosive Gases SAFE 808COM

In stock > 5 pcs

Buy at the price for both existing and new AlzaPlus+ members 49.41 €

Gas Leak Detector - detects CO (carbon monoxide), natural gas, propane-butane, measurement range to 2500 ppm, mains power supply, reaction time 20 s, acoustic, visual signals,...

Added to cart

- +

FIBARO Flood Sensor - Water Leak Detector

FIBARO Flood Sensor

54.90 € New 86.90 €

Unsealed - in stock 1 pcs

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

- +

Combined Fire Detector and CO FireAngel SCB10 - Gas Leak Detector

Combined Fire Detector and CO FireAngel SCB10

In stock > 5 pcs

Gas Leak Detector - detects CO (carbon monoxide), smoke, battery-powered, acoustic signals, battery indication, features alarm, cover material plastic, battery and mounting kit...

Added to cart

- +

KIDDE Combination smoke detector KIDDE-K10SCO - Smoke Detector

KIDDE Combination smoke detector KIDDE-K10SCO

In stock > 5 pcs

Smoke Detector - detects CO (carbon monoxide), measurement range from 0 ppm, battery-powered , acoustic signals, signal volume 85 dB, battery indication, cover material plastic,...

Added to cart

- +

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)

In stock > 5 pcs

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

- +

Eve Motion (Matter - compatible with Apple, Google, SmartThings & Amazon Alexa) - Motion Sesnor

Eve Motion (Matter - compatible with Apple, Google, SmartThings & Amazon Alexa)

In stock > 5 pcs

Motion Sesnor , connect through Bluetooth, closed system with detection motion and Light compatible with Apple Home, Google Home and Samsung SmartThings, range: lighting, security...

Added to cart

- +

Ajax DoorProtect White - Door and Window Sensor

Ajax DoorProtect White

Currently Unavailable

Door and Window Sensor - wireless, compatible with Ajax, connect via Radio frequency, range of 1200m, central unit required, supported OS: Android, Windows and iOS, application in...

View

SAFE Wireless flammable and explosive gas detector 5YGAS-RF - Gas Leak Detector

SAFE Wireless flammable and explosive gas detector 5YGAS-RF

Currently Unavailable

Gas Leak Detector - detects natural gas, mains power supply, detection reach 1000 m, acoustic, visual signals, signal volume 85 dB, features alarm, cover material plastic,...

View

SAFE FireSafe 10YDCO-RF Wirelessly connectable carbon monoxide (CO) detector - Gas Leak Detector

SAFE FireSafe 10YDCO-RF Wirelessly connectable carbon monoxide (CO) detector

Currently Unavailable

Gas Leak Detector - detects CO (carbon monoxide), battery-powered, acoustic, visual signals, signal volume 85 dB, features alarm, cover material plastic, operating temperature from...

View

Kidde 10LLDCO CO Detector (Moisture Resistant) - Gas Leak Detector

Kidde 10LLDCO CO Detector (Moisture Resistant)

In stock > 5 pcs

Gas Leak Detector - detects CO (carbon monoxide), signal volume 85 dB, standalone unit

Added to cart

- +

Ubiquiti UniFi Protect Sense - Sensor

Ubiquiti UniFi Protect Sense

In stock > 5 pcs

Sensor - Multisensor, Bluetooth 5.0 BLE, Motion, opening, Temperature, humidity, water

Added to cart

- +

Nedis ZBDCO11WT - Gas Leak Detector

Nedis ZBDCO11WT

Ordered on request

Gas Leak Detector - detects CO (carbon monoxide), battery-powered, acoustic signals, notifications via push notifications, signal volume 85 dB, battery indication, features alarm,...

Added to cart

- +

Philips Hue Outdoor Motion Sensor - Motion Sesnor

Philips Hue Outdoor Motion Sensor

In stock > 5 pcs

Motion Sesnor , closed system with detection motion compatible with Apple Home and Philips Hue, power supply: Battery-Powered,

Added to cart

- +

Ajax LeaksProtect Black - Water Leak Detector

Ajax LeaksProtect Black

Currently Unavailable

Water Leak Detector - detects water gas, battery-powered, range: 1300 m, reaction time: 0,15s, compatible with Ajax, connection via radio waves, protection against sabotage,...

View

Ajax LeaksProtect White - Water Leak Detector

Ajax LeaksProtect White

In stock 4 pcs at the supplier's

Water Leak Detector - detects water gas, battery-powered, range: 1300 m, reaction time: 0,15s, compatible with Ajax, connection via radio waves, protection against sabotage,...

Added to cart

- +

FIBARO Smoke Sensor - Smoke Detector

FIBARO Smoke Sensor

On the way 3 pcs

Expected 29/07/2026

Smoke Detector - detects temperature, temperature measurement from -20 to 100 °C, battery-powered , acoustic, visual signals, signal volume 85 dB, battery indication, features:...

Added to cart

- +

IMMAX NEO Smart Ultrasonic Liquid Level Sensor , 5 m, WiFi - Sensor

IMMAX NEO Smart Ultrasonic Liquid Level Sensor , 5 m, WiFi

In stock > 5 pcs

Sensor - precise measurement using ultrasonic technology, suitable for any type of liquid, IP65 resistance, possibility of connection to a smart water valve, Immax NEO PRO app in...

Added to cart

- +

Shelly Gas, CNG Gas Detector, Alarm: Flashing LED & Acoustic Signal, WiFi - Detector

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....

Added to cart

- +

Homematic IP PIR motion detector - for 55 mm frame, indoor - HmIP-SMI55-2 - Motion Sesnor

Homematic IP PIR motion detector - for 55 mm frame, indoor - HmIP-SMI55-2

Currently Unavailable

Motion Sesnor , connect through WiFi 2,4 GHz, open system with detection motion compatible with Google Home and Manufacturer app, range: security, power supply: Battery-Powered,

View

Homematic IP Smoke detector HmIP-SWSD-2 - Smoke Detector

Homematic IP Smoke detector HmIP-SWSD-2

In stock > 5 pcs

Buy at the price for both existing and new AlzaPlus+ members 62.61 €

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

- +

Homematic IP Occupancy Sensor - indoor - HmIP-SPI - Motion Sesnor

Homematic IP Occupancy Sensor - indoor - HmIP-SPI

Currently Unavailable

Motion Sesnor with detection motion compatible with Google Home and Manufacturer app, range: lighting, power supply: Battery-Powered,

View

No longer sold

Chcete doručit do České republiky? Jdi na Detektory

Für den Versand nach Deutschland, besuchen Sie bitte Detektoren und Sensoren

Für den Versand nach Österreich, besuchen Sie bitte Detektoren und Sensoren

Magyarországra rendelnél? Látogasd meg ezt a termékkategóriát Szivárgás érzékelők és detektorok

Try our cookies

Alza.cz a. s., Company identification number 27082440, use cookies and other data to ensure the proper functioning of the website and, with your consent, also, among other things, to personalize advertising and the content of our websites. By clicking on the “I understand“ button, you agree to the use of cookies and the transfer of data regarding the behavior on the website for displaying targeted advertising on social networks and advertising networks on other websites.

More information

P-DC1-WEB04