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?
All from 349
FIBARO Motion Sensor
76.90 €
On the way 1 pcs
Expected 27/09/2026
Motion Sesnor , connect through WiFi 2,4 GHz and Bluetooth with detection motion, Lights and temperature, range: security, application in English, Czech, German and Slovak, power...
EVOLVEO wireless outdoor siren for Alarmex / Sonix
-6 % off new
76.90 €
New 81.90 €
Unsealed - in stock 1 pcs
Siren - closed system, area of use: security, power supply: Power plug
FIBARO Smoke Sensor
78.90 €
Ordered on request
Smoke Detector - detects temperature, temperature measurement from -20 to 100 °C, battery-powered , acoustic, visual signals, signal volume 85 dB, battery indication, features:...
Ajax DoorProtect Plus White
79.10 €
Currently Unavailable
Door and Window Sensor - wireless, compatible with Ajax, connect via Radio frequency, deviation angle adjustment and protection against sabotage, range of 1000m, central unit...
Ajax DoorProtect Plus Black
79.10 €
In stock 4 pcs at the supplier's
Door and Window Sensor - wireless, compatible with Ajax, connect via Radio frequency, deviation angle adjustment and protection against sabotage, range of 1000m, central unit...
Siemens Connected Home water leak detector SCH040ZB, ZigBee
79.36 €
In stock 4 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Water Leak Detector - detects Water gas, battery-powered, reaction time: 2s, sound level: 60dB, compatible with Connected Home, battery indication, central unit required to...
Shelly Presence Sensor Gen4, Black
79.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Motion Sesnor , connect through WiFi 2,4 GHz, open system with detection motion compatible with Manufacturer app, application in English, Czech and Slovak, power supply: Power...
Nedis WIFISA20CBK
79.90 €
In stock 1 pcs at the supplier's
Air Quality Meter - detects temperature, humidity, CO₂ (carbon dioxide), mains power supply, acoustic, visual signals, notifications via push notifications, battery indication and...
Airthings Wave mini - air quality, humidity, temperature and air chemicals sensor
-7 % off new
79.90 €
New 85.97 €
Unsealed - in stock 2 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Air Quality Meter - detects temperature, humidity, TVOC (volatile organic compounds), temperature measurement with accuracy 1 °C, humidity measurement with accuracy 3 %,...
Shelly Presence Sensor Gen4, White
79.90 €
In stock 1 pcs
Motion Sesnor , connect through WiFi 2,4 GHz, open system with detection motion compatible with Manufacturer app, application in English, Czech and Slovak, power supply: Power...
EVOLVEO wireless outdoor siren for Alarmex / Sonix
81.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Siren - closed system, area of use: security, power supply: Power plug
Airbi CO2AIR digital carbon dioxide meter
81.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Detector - CO₂ (carbon dioxide) detection, measurement range from 400 to 2400 ppm, mains + battery power, reaction time 6 s, display, independently functional unit
QINGPING CO2 & Temperature & RH Monitor
-1 % off new
82.90 €
New 83.90 €
Unsealed - in stock 2 pcs
Add AlzaPlus+ and save instantly
66.32 €
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...
AQARA Spatial Multi-Sensor FP400 Kit (PS-S05D), Zigbee, Thread
New arrival
83.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Motion Sesnor , connect through Bluetooth and Radio frequency, open system with detection motion, Lights and Human presence compatible with Apple Home, Google Home, Samsung...
QINGPING CO2 & Temperature & RH Monitor
83.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Add AlzaPlus+ and save instantly
67.12 €
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...
Nice battery operated motion sensor
85.90 €
Currently Unavailable
Motion Sesnor , connect through WiFi 2,4 GHz, closed system with detection motion compatible with Manufacturer app, range: lighting, security and home control, application in...
FIBARO Flood Sensor
85.90 €
Ordered on request
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...
Airthings Wave mini - air quality, humidity, temperature and air chemicals sensor
85.97 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Air Quality Meter - detects temperature, humidity, TVOC (volatile organic compounds), temperature measurement with accuracy 1 °C, humidity measurement with accuracy 3 %,...
Homematic IP Tilt and vibration sensor
87.23 €
Currently Unavailable
Sensor - tilt and vibration sensor, closed system, central unit operation, Android OS + iOS, mobile notifications
Homematic IP PIR motion detector with brightness sensor - outdoor, anthracite - HmIP-SMO-A-2
87.23 €
Currently Unavailable
Motion Sesnor , closed system with detection motion, range: security, power supply: Battery-Powered,
Homematic IP PIR motion detector with brightness sensor - outdoor - HmIP-SMO-2
87.23 €
Currently Unavailable
Motion Sesnor , connect through WiFi 2,4 GHz, closed system with detection motion, range: lighting, heating and cooling and security, application in Czech, power supply:...
Ajax MotionProtect Black
88.19 €
Currently Unavailable
Motion Sesnor , connect through Radio frequency with detection motion compatible with Ajax, range: security, application in English, power supply: Battery-Powered,
Ajax MotionProtect White
88.19 €
Currently Unavailable
Motion Sesnor , connect through Radio frequency with detection motion compatible with Ajax, range: security, application in English and Czech, power supply: Battery-Powered,
ERMENRICH Gas detector NG40 84092
91.80 €
In stock > 5 pcs at the supplier's
Gas Leak Detector - measurement range from 0 to 10000 ppm, battery power, acoustic, optical signalling, battery status indication and display, reset and alarm functions, operating...
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