Smart Home Sensors & Detectors


SmartHome detectors and sensors are designed both for connection to central units and for stand-alone use without them. These are, for example, motion sensors, smoke, gas or CO detectors or anti-flood detectors. All the sensors work with smartphones, so you always have a full overview of what's going on in your home.

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Installing a SmartHome system is easy

The installation of various detectors and sensors is user-friendly and does not require any construction modifications or complicated wiring, as these expansion modules communicate wirelessly.

Pay attention to compatibility

When choosing expansion modules, it is important to focus on the communication protocol.

  • Some accessories require a connection to the central unit. The purchased module must be built on the same communication protocol as this unit, such as ZigBee or Z-Wave. Otherwise, the two devices will not communicate.
  • Other devices work independently, for example via Bluetooth or Apple HomeKit. They can be controlled via the manufacturer's app and don't require a central unit to work.

SmartHome detectors and sensors have many uses

There are a number of detectors and sensors on the market, so we sort them into groups for better clarity.

  • Motion detectors
  • Motion detectors for windows or doors
  • Smoke, gas or carbon monoxide detectors
  • Vibration detectors
  • Flood detectors
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617 Results
4.0 2×
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Meross Smart Water Leak Sensor
Water Leak Detector - detects Water gas, battery-powered, sound level: 100dB, compatible with Apple Home, Google Home, Samsung SmartThings and Manufacturer app, connection via radio waves, central unit required to function,, app with Czech language support, app with Czech and English language support for Android and iOS
-10 % off new 269,- New 299,-
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Order Code: Mer2520
4.7 6×
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Meross Smart Presence Sensor
Sensor - dual detection technology, accurate presence detection even without motion, range up to 12 m, intelligent lighting automation, minimising false alarms, HomeKit compatibility, Alexa, Google Home and Matter, stable and secure connection, continuous cable power supply, adjustable base, protective shield against pet detection, mounting bracket included
-4 % off new 959,- New 999,-
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Order Code: Mer2415
4.0 18×
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Gosund Intelligent Water Leak Sensor, Zigbee
Water Leak Detector - detects water gas, battery-powered, compatible with Tuya and Manufacturer app, central unit required to function,, app with Czech language support, app with Czech and English language support for Android
-10 % off new 269,- New 299,-
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Order Code: GoSnd32
3.2 8×
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EZVIZ Water leak sensor T10C
Water Leak Detector - detects Humidity and Water gas, battery-powered, range: 200 m, compatible with Google Home and EZVIZ, connect via WiFi 2,4 GHz, battery indication, central unit required to function,, app with Czech language support, app with Czech and English language support for Android and iOS
-12 % off new 409,- New 469,-
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Order Code: EZVIZ23_04
4.3 4×
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Smoot Air Leak Pro
Water Leak Detector - detects water gas, battery-powered, compatible with Apple Siri shortcuts and Tuya, connect via WiFi 2,4 GHz, battery indication, standalone functional unit,, app with Czech language support for Android and iOS
-8 % off new 409,- New 449,-
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Order Code: HLDdh19
3.2 8×
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EZVIZ Water leak sensor T10C
Water Leak Detector - detects Humidity and Water gas, battery-powered, range: 200 m, compatible with Google Home and EZVIZ, connect via WiFi 2,4 GHz, battery indication, central unit required to function,, app with Czech language support, app with Czech and English language support for Android and iOS
-42 % off new 269,- New 469,-
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Order Code: EZVIZ23_04
3.7 8×
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Meross Smart Water Leak Sensor Kit
Water Leak Detector - detects Water gas, mains and battery power, sound level: 60dB, compatible with Apple Home, Samsung SmartThings and Manufacturer app, connect via WiFi 2,4 GHz, central unit required to function, app with English language support for Android and iOS
-9 % off new 659,- New 729,-
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Order Code: Mer24_13
3.9 10×
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Niceboy ION ORBIS Motion Sensor
Motion Sesnor , open system with detection motion compatible with Niceboy ION, range: home control, application in English, Czech and Slovak,
  369,-
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Order Code: NCB23_006
4.7 3×
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EVOLVEO Alarmex Pro (ACSALMRMT) remote control/key fob
Keychain -
-31 % off new 129,- New 189,-
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Order Code: EVO22_14
4.5 6×
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EVOLVEO wireless outdoor siren for Alarmex / Sonix
Siren - closed system, area of use: security, power supply: Power plug
-37 % off new 1,239,- New 1,989,-
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Order Code: RY203f
5.0 2×
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EVOLVEO Alarmex Pro (ACSALMMST) wireless door/window detector
Door and Window Sensor - wireless, compatible with Manufacturer app, connect via WiFi 2,4 GHz, GSM and Radio Frequency, range of 100m, central unit required, supported OS: Android and iOS, application in Czech, application in Czech and English
-20 % off new 309,- New 389,-
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Unsealed - in stock 2 pcs
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Order Code: EVO22_09
5.0 5×
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RETLUX RSH 308 PIR Smart Motion Sensor
Motion Sesnor , connect through Radio frequency, closed system with detection Human presence compatible with Google Home, Tuya and Manufacturer app, range: security and home control, application in English, Czech and Slovak, power supply: Battery-Powered,
-7 % off new 379,- New 409,-
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Order Code: RTLX25040
4.3 8×
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RETLUX RSH 307 Smart door/window sensor
Door and Window Sensor -, compatible with Google Home, connect via Radio frequency, battery indication, central unit required
  319,-
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Order Code: RTLX25039
3.8 5×
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Xiaomi Mi Motion Sensor 2S
Motion Sesnor , connect through Bluetooth, closed system with detection motion and Lights compatible with Xiaomi Home, range: lighting, security and home control, power supply: Battery-Powered,
-12 % off new 349,- New 399,-
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Order Code: XI300l04
4.8 4×
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EZVIZ T1C PIR
Motion Sesnor , closed system with detection motion compatible with Google Home and EZVIZ, range: security, application in English, Czech, German and Hungarian, power supply: Battery-Powered,
-11 % off new 549,- New 619,-
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Order Code: EZVIZ23_01
5.0 1×
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EMOS PIR sensor (motion sensor), IP20, 1200 W, white
Motion Sesnor , closed system with detection motion, range: lighting, power supply: Power plug,
  339,-
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Unsealed - in stock 1 pcs
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Order Code: EMOS26179
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LinknLink eTHS2 Bezdrátový Bluetooth teploměr a vlhkoměr s LCD displejem
Digital Thermometer
New arrival 335,-
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In stock 5 pcs at the supplier's
Order Code: SMARaaa0119
4.4 3×
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EVOLVEO wireless water level detector for Alarmex/Sonix
Water Leak Detector - detects water gas, battery-powered, central unit required to function
-50 % off new 149,- New 299,-
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Order Code: RY202f
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EMOS Microwave Presence Sensor, IP20, 24 GHz, 2000 W, white, 3 m range
Motion Sesnor , closed system with detection motion and Human presence, range: lighting, power supply: Power plug,
  679,-
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In stock > 5 pcs at the supplier's
Order Code: EMOS26180
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IMMAX NEO Smart Smoke Sensor, Zigbee 3.0
Smoke Detector - battery-powered , acoustic signals, notifications via push notifications, signal volume 85 dB, battery indication, features: test button, reset and alarm, cover material plastic, operating temperature from -10 to 50 °C, operating humidity up to 95 %, ingress protection IP20, input voltage 3V, mounting kit included, compatible with Tuya, Lidl Home, Smartlife, Tesla Smart and Immax NEO PRO, requires a central hub, app language options: Czech and English , compatible with Android and iOS
-11 % off new 529,- New 599,-
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Unsealed - in stock 2 pcs
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Order Code: IMMX26050
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SONOFF SenseGuard Motion Gen2 Zigbee Motion Sensor SNZB-03PR2
Motion Sesnor , open system with detection motion compatible with Samsung SmartThings, eWeLink and Home Assistant, range: security, power supply: Battery-Powered,
-10 % off new 409,- New 459,-
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Unsealed - in stock 2 pcs
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Order Code: SNF2631
2.8 4×
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QINGPING Bluetooth Clock - pink
Alarm Clock - Digital, power supply: battery
-17 % off new 289,- New 349,-
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Unsealed - in stock 2 pcs
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Order Code: QGP012b
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EMOS PIR DALI sensor (motion sensor), IP54, white
Motion Sesnor , open system with detection motion, range: lighting, power supply: Power plug,
  949,-
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In stock > 5 pcs at the supplier's
Order Code: EMOS26177
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iGET SECURITY MP4, Wireless, Magnetic, for M6-4G
Door and Window Sensor - wireless, compatible with Manufacturer app, connect via Radio frequency, battery indication, range of 800m, central unit required, supported OS: Android and iOS, application in Czech, application in Czech and English
  449,-
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Unsealed - in stock 1 pcs
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Order Code: IGET26005
In the category Smart Home Sensors & Detectors on Alza.cz, we currently have a total of 617 products, which you can easily buy online and get quickly delivered. See all of your purchases and make orders on our easy-to-use app.
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