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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 CN20 marked at 6.49 € incl. VAT. Is this what you’re looking for?
All from 326
SAFE Water Guard, white - Sensor
SAFE Water Guard, white
41.90 €
In stock 3 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Sensor - wireless water leak detector, the detector is powered by a replaceable battery that allows continuous operation for up to 3 years, colour white
SAFE Fire Guard, white - Sensor
SAFE Fire Guard, white
41.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Sensor - wireless fire detector with groundbreaking dual-spectrum detection and SIC technology, It can operate in a SAFE system or completely autonomously. Battery powered for up...
MOES Mini CO Detector, grey - Gas Leak Detector
MOES Mini CO Detector, grey
41.90 €
In stock 1 pcs
2 colors
Order by midnight, get it at the AlzaBox in the morning.
Info
Gas Leak Detector - measurement range from 0 to 1000 ppm, deviation 100 ppm, reaction time 2 s, acoustic signals, battery indication and display, features alarm, cover material...
MOES Mini CO Detector, orange - Gas Leak Detector
MOES Mini CO Detector, orange
41.90 €
In stock 1 pcs
2 colors
Order by midnight, get it at the AlzaBox in the morning.
Info
Gas Leak Detector - measurement range from 0 to 1000 ppm, reaction time 2 s, acoustic signals, battery indication and display, features alarm, cover material plastic, operating...
Meross Smart Presence Sensor - Sensor
Meross Smart Presence Sensor
41.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Sensor - dual detection technology, accurate presence detection even without motion, range up to 12 m, intelligent lighting automation, minimising false alarms, HomeKit...
WiZ Contact sensor 2pack - Door and Window Sensor
WiZ Contact sensor 2pack
41.90 €
Currently Unavailable
Door and Window Sensor - wireless, compatible with Google Home and Manufacturer app, connect via WiFi 2,4 GHz, battery indication, night orientation light and adjustable...
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SAFE - CO detector SAFE 10YDCO-PRO - Gas Leak Detector
SAFE - CO detector SAFE 10YDCO-PRO
41.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Gas Leak Detector - detects CO (carbon monoxide), battery-powered, acoustic, visual signals, signal volume 85 dB, battery indication, operating temperature from -10 to 55 °C,...
MOES CO Detector, Zigbee - Gas Leak Detector
MOES CO Detector, Zigbee
41.90 €
In stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Gas Leak Detector - detects CO (carbon monoxide), battery-powered, acoustic signals, notifications via push notifications, signal volume 85 dB, battery indication, features...
Eufy Motion Sensor - White - Motion Sesnor
Eufy Motion Sensor - White
41.90 €
In stock 4 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Buy with code ALZADNI20 33.52 € The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Získajte zľavu 20% s kódom ALZADNI20. Kliknite a kód sa uplatní automaticky.
Motion Sesnor , connect through WiFi 2,4 GHz, closed system with detection motion, range: security, application in English, power supply: Battery-Powered,
Honeywell Home R200S-N2 Interconnected fire detector alarm - smoke (optical) principle, battery oper - Smoke Detector
Honeywell Home R200S-N2 Interconnected fire detector alarm - smoke (optical) principle, battery oper
43.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Smoke Detector - temperature measurement from 0 to 70 °C, battery-powered , acoustic signals, signal volume 85 dB, features: test button, cover material plastic, operating...
Honeywell R200C-2, Carbon monoxide detector and detector, CO Alarm - Gas Leak Detector
Honeywell R200C-2, Carbon monoxide detector and detector, CO Alarm
45.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Buy with code ALZADNI10 41.31 € The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Získajte zľavu 10 % s kódom ALZADNI10. Kliknite a kód sa uplatní automaticky.
Gas Leak Detector - detects CO (carbon monoxide), smoke, measurement range from 3 to 330 ppm, gas detection sensitivity 28 ppm, battery-powered, acoustic signals, signal volume 85...
Kidde 7DCO CO Detector with Alarm (Gas Leak Sensor) - Gas Leak Detector
Kidde 7DCO CO Detector with Alarm (Gas Leak Sensor)
46.59 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Gas Leak Detector - detects CO (carbon monoxide), signal volume 85 dB, standalone unit
Philips Hue Motion Sensor - Motion Sesnor
Philips Hue Motion Sensor
46.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Motion Sesnor , connect through Bluetooth, open system with detection motion compatible with Apple Home, range: lighting, application in English, Czech, German, Slovak and...
IMMAX NEO Smart Ultrasonic Liquid Level Sensor , 5 m, WiFi - Sensor
IMMAX NEO Smart Ultrasonic Liquid Level Sensor , 5 m, WiFi
46.97 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Buy with code ALZADNI30 32.88 € The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Získajte zľavu 30 % s kódom ALZADNI30. Kliknite a kód sa uplatní automaticky.
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...
Kidde CO detector with alarm K7CO - moisture resistant - Gas Leak Detector
Kidde CO detector with alarm K7CO - moisture resistant
47.99 €
Currently Unavailable
Gas Leak Detector - detects CO (carbon monoxide), measurement range from 0 ppm, battery-powered, acoustic signals, signal volume 85 dB, features test button, cover material...
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SAFE Door Guard Plus, white - Sensor
SAFE Door Guard Plus, white
48.90 €
In stock 3 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Sensor - wireless magnetic open, shock and tilt detector for window and door security Powered by a replaceable battery that allows continuous operation for up to 4 years, white...
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
48.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Buy with code ALZADNI10 44.01 € The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Získajte zľavu 10 % s kódom ALZADNI10. Kliknite a kód sa 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...
EVOLVEO Alarmex Pro ( ACSALMOUS) wireless outdoor light and sound siren - Siren
EVOLVEO Alarmex Pro ( ACSALMOUS) wireless outdoor light and sound siren
-9 % off new 48.90 € New 53.90 €
Unsealed - in stock 2 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Siren - closed system, area of use: security, OS supported: Android and iOS, compatible with Manufacturer app, power supply: Power plug, in Czech and English
Combined Fire Detector and CO FireAngel SCB10 - Gas Leak Detector
Combined Fire Detector and CO FireAngel SCB10
Discounted -10 % 49.90 € 55.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Gas Leak Detector - detects CO (carbon monoxide), smoke, battery-powered, acoustic signals, battery indication, features alarm, cover material plastic, battery and mounting kit...
AQARA Presence Sensor FP1E (PS-S03D), Zigbee - Motion Sesnor
AQARA Presence Sensor FP1E (PS-S03D), Zigbee
50.90 €
In stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Motion Sesnor , connect through Radio frequency, open system with detection motion compatible with Aqara Home and Manufacturer app, range: lighting and security, application in...
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)
-8 % off new 52.90 € New 57.90 €
As good as new - in stock 1 pcs
Buy with code ALZADNI25 39.68 € The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Získajte zľavu 25% s kódom ALZADNI25. Kliknite a kód sa uplatní automaticky.
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,...
FireAngel FA3328 CO detector with NFC diagnostics - Gas Leak Detector
FireAngel FA3328 CO detector with NFC diagnostics
Great price 52.90 € Save 3 €
In stock 3 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Gas Leak Detector - detects CO (carbon monoxide), battery-powered, acoustic signals, signal volume 85 dB, battery indication, features test button, temporary shutdown and...
Eufy Security Water and Freeze Sensor - Water Leak Detector
Eufy Security Water and Freeze Sensor
53.90 €
On the way > 5 pcs
Expected 08/06/2026
Buy with code ALZADNI20 43.12 € The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Získajte zľavu 20% s kódom ALZADNI20. Kliknite a kód sa uplatní automaticky.
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...
EVOLVEO Alarmex Pro ( ACSALMOUS) wireless outdoor light and sound siren - Siren
EVOLVEO Alarmex Pro ( ACSALMOUS) wireless outdoor light and sound siren
53.90 €
In stock 3 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Siren - closed system, area of use: security, OS supported: Android and iOS, compatible with Manufacturer app, power supply: Power plug, in Czech and English
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