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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604 Results
4.5 23×
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Shelly Gen3 H&T, battery operated temperature and humidity sensor with display, WiFi, ivory
Detector - battery operated temperature and humidity sensor with display, WiFi, ivory
BLACK FRIDAY -10 % 909,- 1,010,-
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Order Code: Shell24_011
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
  299,-
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Order Code: GoSnd32
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
  999,-
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Order Code: Mer2415
5.0 3×
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SONOFF WLDC200 Water Leak Detection Cable
Extension Cable
BLACK FRIDAY -33 % 179,- 269,-
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Order Code: SNFa109
4.0 1×
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Netatmo 2x Smart AC Controller
Smart Wireless Remote to the air conditioning, smart, WiFi 2.4 GHz, iOS apps, Android, compatible with Apple HomeKit, Google Home, Amazon Alexa
  5,099,-
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Order Code: Neta2401
5.0 9×
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EVOLVEO mini siren for Alarmex/Sonix
Siren - closed system, area of use: security
  from  180,-
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Order Code: RY202r
4.0 6×
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Elektrobock CN-L01
Motion Sesnor , closed system with detection motion, range: lighting and electrical installation, power supply: Power plug,
Great price 279,- Save 20,-
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Order Code: ELBOCK070
4.2 6×
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Elektrobock CN05A
Motion Sesnor with detection motion, range: lighting, power supply: Power plug,
  199,-
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Order Code: ELBOCK140
5.0 4×
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Eufy Security Water and Freeze Sensor
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 function, app with English language support for Android and iOS
  1,299,-
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Order Code: Anker24014
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
BLACK FRIDAY -25 % 299,- 399,-
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Order Code: Mer2520
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
  1,989,-
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Order Code: RY203f
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
  469,-
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Order Code: EZVIZ23_04
5.0 5×
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Shelly-BYPASS
Switching Relay - Shelly Bypass, compatible with Shelly 1L and Shelly Dimmer 2
  129,-
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Order Code: SHELLa2118
4.5 7×
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Somfy IntelliTAG sensor
Door and Window Sensor -, compatible with Manufacturer app, connect via Radio frequency, range of 200m, separately functional unit, supported OS: Android and iOS
  1,499,-
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In stock 4 pcs
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Order Code: SOMA04
5.0 1×
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Tedee Door Sensor, white
Sensor - real-time door status detection, door status display in tedee app, long-open door alert, wireless operation, Bluetooth
  1,349,-
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In stock 4 pcs
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Order Code: Tedee25005
3.7 3×
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Niceboy ION ORBIS Windows & Door Sensor
Door and Window Sensor - wireless, compatible with Niceboy ION, battery indication, central unit required, supported OS: Android and iOS, application in Czech, application in Czech and English
BLACK FRIDAY -25 % 374,- 499,-
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Order Code: NCB23_009
4.0 4×
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Honeywell Home R200H-N2 Interconnected fire alarm detector - temperature principle, battery operated
Temperature Sensor - interconnected fire detector, battery powered
  948,-
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Order Code: HNW22_03
4.7 11×
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Elektrobock CN15
Motion Sesnor with detection motion, range: lighting, power supply: Power plug,
  259,-
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Order Code: ELBOCK036
5.0 6×
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Nous E2 Zigbee Smart PIR motion sensor
Motion Sesnor , open system with detection motion compatible with Tuya and Manufacturer app, range: lighting and security, application in English and Slovak, power supply: Battery-Powered,
  459,-
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Order Code: NOUSmh006
4.0 2×
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AVATTO Zigbee Smart Humidity & Temperature Sensor
Sensor -Zigbee temperature and humidity sensor, compatible with Tuya and ZigBee, Support for Alexa and Google Assistant voice control, clear LCD display, automation of ventilation, air conditioners and humidifiers, high accuracy ±1 °C / ±5 % RH, CR2430 battery power supply, table and wall mounting, white design
BLACK FRIDAY -25 % 449,- 599,-
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Order Code: AVT061a
5.0 3×
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Elektrobock CN16F
Motion Sesnor with detection motion, range: lighting, power supply: Power plug,
  279,-
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Order Code: ELBOCK144
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
  729,-
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Order Code: Mer24_13
4.0 3×
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EVOLVEO Alarmex Pro (ACSALMPIR) wireless PIR motion sensor
Motion Sesnor , connect through GSM, closed system with detection motion, range: security, power supply: Battery-Powered,
  579,-
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Order Code: EVO22_12
3.7 8×
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Meross Smart Water Leak Sensor
Sensor - water leak sensor, for a safe home, It works 24/7, powered by replaceable CR123A battery (lifetime 18 months), battery indicator, IP67 waterproof, alerts via the app, 60 dB alarm, Meross Hub central unit is required for sensor functionality
  599,-
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Order Code: Mer24_14
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In the category Smart Home Sensors & Detectors on Alza.cz, we currently have a total of 604 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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