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 SONOFF WLDC200 Water Leak Detection Cable marked at 7.63 € incl. VAT. Is this what you’re looking for?
All from 199
IMMAX NEO Smart Ultrasonic Liquid Level Sensor , 5 m, WiFi
Discounted -30 %
42.90 €
61.50 €
In stock
Order by midnight, get it at the AlzaBox in the morning.
Info
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...
SAFE Door Guard Plus, white
Amazing Deal
44.90 €
44.90 €
In stock 1 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 R200S-N2 Interconnected fire detector alarm - smoke (optical) principle, battery oper
47.90 €
In stock 4 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...
SAFE Glass Guard, white
Amazing Deal
48.90 €
48.90 €
In stock 2 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Sensor - wireless glass breakage detector for security of glazed surfaces equipped with two NC inputs, Multi-factor glass breakage detection with the possibility of remote...
iGET SECURITY MP30 – Wireless Outdoor Motion PIR Sensor for M6-4G Alarm
49.90 €
In stock 3 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Motion Sesnor , connect through Radio frequency, closed system with detection motion compatible with Manufacturer app, range: security, application in English, Czech, Slovak,...
X-Sense SC07-MR RF Combined Smoke and CO Detector for SB550 Station
49.90 €
On the way 2 pcs
Expected 19/10/2026
Smoke Detector - detects CO (carbon monoxide), gas, measurement range from 30 to 999 ppm, battery-powered , reaction time 1 s, acoustic, visual signals, notifications via push...
X-Sense XS01-WX Wi-Fi Smoke Detector
49.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Smoke Detector - battery-powered , reaction time 1 s, acoustic, visual signals, notifications via push notifications, signal volume 85 dB, battery indication and protection against...
Eve Motion (Matter - compatible with Apple, Google, SmartThings & Amazon Alexa)
49.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Motion Sesnor , connect through Bluetooth, closed system with detection motion and Lights compatible with Apple Home, Google Home and Samsung SmartThings, range: lighting, security...
WiZ Contact sensor 2pack
50.36 €
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...
SAFE Motion Guard, white
Amazing Deal
52.90 €
52.90 €
In stock 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
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...
Nedis ZBDCO11WT
Discounted -8 %
52.90 €
57.90 €
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,...
Shelly Gas, CNG Gas Detector, Alarm: Flashing LED & Acoustic Signal, WiFi
52.90 €
In stock 1 pcs
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....
Philips Hue Outdoor Motion Sensor
52.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Motion Sesnor , closed system with detection motion compatible with Apple Home and Philips Hue, power supply: Battery-Powered,
SAFE Fire Guard, white
56.52 €
Currently Unavailable
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...
Honeywell Home R200C-N2, Connected Carbon Monoxide Detector and Detector, CO Alarm
Discounted -10 %
58.40 €
64.90 €
In stock
Order by midnight, get it at the AlzaBox in the morning.
Info
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...
Ubiquiti UniFi Protect Sense
Great price
59.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Sensor - Multisensor, Bluetooth 5.0 BLE, Motion, opening, Temperature, humidity, water
EVOLVEO Alarmex Pro ( ACSALMOUS) wireless outdoor light and sound siren
Great price
59.90 €
In stock 1 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
Nedis WIFISA20CBK
63.90 €
In stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Air Quality Meter - detects temperature, humidity, CO₂ (carbon dioxide), mains power supply, acoustic, visual signals, notifications via push notifications, battery indication and...
Homematic IP Smoke detector HmIP-SWSD-2
64.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Smoke Detector - battery-powered , detection reach 40 m, acoustic, visual signals, signal volume 85 dB, battery indication, features: test button, cover material plastic, operating...
AQARA Presence Sensor FP2
64.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Motion Sesnor , connect through WiFi 2,4 GHz and Bluetooth, closed system with detection motion and Lights compatible with Apple Home, Google Home, IFTTT and Aqara Home, range:...
SAFE Motion Guard Plus, white
Amazing Deal
65.90 €
65.90 €
In stock 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Sensor - wireless dual PIR motion detector with microwave sensor detecting motion up to 12 meters, which is able to reliably ignore the movement of animals in the guarded area (PET...
Ajax GlassProtect (8EU) ASP white (38109)
69.52 €
Currently Unavailable
Vibration Detector - detects vibration gas, battery-powered, compatible with Ajax and Manufacturer app, connection via radio waves, battery indication, adjustable sensitivity and...
Ajax GlassProtect (8EU) ASP black
69.52 €
Currently Unavailable
Vibration Detector - detects vibration gas, battery-powered, compatible with Ajax and Manufacturer app, connection via radio waves, battery indication, adjustable sensitivity and...
QINGPING CO2 & Temperature & RH Monitor
69.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Air Quality Meter - detects gas, temperature, humidity, measurement range from 400 to 9999 ppm, temperature measurement from -20 to 50 °C with accuracy 0.5 °C, humidity measurement...
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