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Hundreds of categories, thousands of products, millions of details and user reviews for detectors. How can you make sense of all of this? Try our Alza Test, which guarantees an objective selection based on customers' experiences. How the products from detectors rank are based solely on various data and feedback from actual people who have purchased the products.

405 Results
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Ajax LifeQuality (8EU) black - Intelligent air quality sensor
Air Quality Meter - detects temperature, humidity, CO₂ (carbon dioxide), measurement range from 400 to 5000 ppm, measurement range from 0 to 100 %, temperature measurement from 0 to 50 °C with accuracy 0.2 °C, humidity measurement with accuracy 1,8 %, battery-powered, detection reach 1700 m, visual signals, notifications via push notifications, battery indication, features: automatic scenarios, cover material plastic, operating temperature from 0 to 50 °C,, ingress protection IP50, battery and mounting kit included, requires a central hub, app language: Czech, compatible with Android, Windows and iOS
  8,736,-
Buy
In stock 3 pcs at the supplier's
Order Code: AJAX23_021
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Smoot ZigBee Leak Pro
Water Leak Detector - detects Water gas, battery-powered, compatible with Apple Siri shortcuts and Tuya, connect via WiFi 2,4 GHz and WiFi 5 GHz, battery indication, central unit required to function,, app with Czech language support for Android and iOS
  790,-
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In stock > 5 pcs at the supplier's
Order Code: SMTphsnz5
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Somfy Interior motion sensor for Tahoma control unit
Motion Sesnor , connect through Radio frequency, open system with detection motion compatible with TaHoma, range: lighting, security and windows, doors, gates, power supply: Battery-Powered,
  3,299,-
Buy
In stock 1 pcs
Order Code: SOMF22_02
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Homematic IP PIR motion detector - for 55 mm frame, indoor - HmIP-SMI55-2
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,
  1,560,-
Buy
In stock > 5 pcs at the supplier's
Order Code: Home22_28
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Homematic IP Occupancy Sensor - indoor - HmIP-SPI
Motion Sesnor with detection motion compatible with Google Home and Manufacturer app, range: lighting, power supply: Battery-Powered,
  1,571,-
Buy
In stock > 5 pcs at the supplier's
Order Code: Home22_29
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Homematic IP PIR motion detector with brightness sensor - outdoor, anthracite - HmIP-SMO-A-2
Motion Sesnor , closed system with detection motion, range: security, power supply: Battery-Powered,
  2,090,-
Buy
In stock > 5 pcs at the supplier's
Order Code: Home22_26
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Homematic IP PIR motion detector with brightness sensor - indoor - HmIP-SMI
Motion Sesnor , connect through WiFi 2,4 GHz, closed system with detection motion, range: security, application in Czech, power supply: Battery-Powered,
  1,290,-
Buy
In stock > 5 pcs at the supplier's
Order Code: Home22_27
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Homematic IP Rain Sensor - HmIP-SRD
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 range of applications in conjunction with other Homematic IP devices. The device detects even the smallest amount of rain or snowfall and then transmits the information to the Central Unit (HmIP-HAP) and the connected Homematic IP devices, which react according to a predefined configuration.
  3,890,-
Buy
In stock 4 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: Home22_37
3.5 2×
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Somfy Door and window sensor
Door and Window Sensor -, compatible with Manufacturer app, connect via Radio frequency, range of 200m, separately functional unit, supported OS: Android and iOS
  2,499,-
Buy
In stock 1 pcs
Order Code: SOM2115
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Eve Water Guard Connected Water Leak Detector - Cable Extension
Extension Cable -
  589,-
Buy
In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: EVE1004
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Honeywell XS100-CSSK-A, Smart X-Series Smoke Detector (Optical), Alarm Scan App, Battery-Powered
Smoke Detector - battery-powered , acoustic signals, signal volume 85 dB, cover material plastic, standalone unit
  949,-
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In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: HM040a4
3.5 2×
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Honeywell XH100-CSSK-A, Smart Smoke Detector X-Series (Thermal Principle), ScanApp, Battery Powered
Smoke Detector - battery-powered , acoustic signals, signal volume 85 dB, cover material plastic, standalone unit
  939,-
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In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: HM040a6
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X-Sense FS31 (3+1) Set of 3 XS01-M Wireless Smoke Detectors with SB550 Base Station
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 via push notifications, signal volume 85 dB, battery indication and protection against sabotage, features: test button and alarm, cover material plastic, operating temperature from -4 to 38 °C, operating humidity from 0 to 85 %, ingress protection IP20, input voltage 3V, mounting kit included, requires a central hub, app language options: Czech and English , compatible with Android and iOS
  2,699,-
Buy
On the way > 5 pcs
Expected 09/10/2026
Order Code: XSEN26007
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Shelly Presence Sensor Gen4, White
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 plug,
  1,901,-
Currently Unavailable
Order Code: Shell26038
3.5 2×
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QINGPING Motion & Light sensor, T version (Apple Homekit)
Motion Sesnor , connect through Bluetooth with detection motion and Lights compatible with Apple Home and Manufacturer app, range: lighting and security, application in English and Czech,
  299,-
Currently Unavailable
Order Code: QGP005a
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ELEKTROBOCK SN131-TR Humidity Sensor
Humidity Sensor
New arrival 619,-
Currently Unavailable
Order Code: ELBOCK160
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Nice battery operated motion sensor
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 English and Czech, power supply: Battery-Powered,
  2,223,-
Currently Unavailable
Order Code: Nice26015
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AVATTO Zigbee Water Sensor
Sensor - ZigBee connection (ZigBee gateway required), compatible with Tuya/Smart Life, water leak detection (probe), in-app notifications (push notifications), local alarm, history of alarm records, smart automation/scenes (intelligent linkage), low consumption, power supply CR2032 (DC 3 V), battery life > 1 year, Low battery indication, 2.4 GHz transmission, operating temperature -10 to +55 °C, dimensions Ø 59,5 × 17 mm
Currently Unavailable
Order Code: AVT060a
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Nedis Miniature Smoke Detector DTCTSL40WT
Smoke Detector - acoustic signals, signal volume 85 dB, features: alarm, cover material plastic, operating temperature from -10 to 50 °C, standalone unit
  819,-
Currently Unavailable
Order Code: BEFlist0018
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Kidde CO detector with alarm K7CO - moisture resistant
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 plastic, operating temperature from -10 to 45 °C, operating humidity up to 90 %, standalone unit
  1,199,-
Currently Unavailable
Order Code: KIDhob006
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EVOLVEO SecuPro, wireless siren with solar power
Siren - closed system, area of use: security, power supply: Battery-Powered, Solar and USB
  899,-
Currently Unavailable
Order Code: EVO24013
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MDT Technologies KNX occupancy sensor 360°, 4 Pyro, brightness measurement, matt white
Sensor - The MDT presence detector is available in several versions, up to 4 pyrosensors and a high-resolution lens, white, ceiling, Channel Hkl, Range 16 m, max. range (Ø) presence 8m
  5,158,-
Currently Unavailable
Order Code: MDTT24307
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EVOLVEO Wireless 360° PIR Ceiling Motion Sensor for Sonix
Motion Sesnor , connect through Radio frequency, closed system with detection motion, range: security, application in English, Czech, Slovak and Hungarian, power supply: Battery-Powered,
  749,-
Currently Unavailable
Order Code: EVolv08
3.3 3×
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Nedis ZBDCO11WT
Gas Leak Detector - detects CO (carbon monoxide), battery-powered, acoustic signals, notifications via push notifications, signal volume 85 dB, battery indication, features alarm, cover material plastic, operating temperature to 50 °C, battery included, compatible with Nedis SmartLife, standalone unit, compatible with Android and iOS
  1,619,-
Buy
In stock > 5 pcs at the supplier's
Order Code: Nedis23_002
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