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Detectors

Detectors – same-day delivery available. Just make sure the product you want is in stock. Choose products to buy from the comfort of your home and have them delivered to your address, to an AlzaBox, or to one of our stores. Learn more about why shop on Alza.cz.

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7 reasons to shop for Detectors on Alza.cz

  • We have a wide network of stores across the Czech Republic, where we follow all hygiene measures, as well as contactless AlzaBoxes (pick-up points).
  • You can see the availability of each item right away. Don't forget that we deliver on weekends too.
  • We accept most payment methods, including contactless and cryptocurrency.
  • You can easily return or exchange your product at any of our AlzaBoxes.
  • Need assistance? Our customer support is available 24/7.
  • We complement our range with accessories and additional services.
  • You'll find all the essential information for each product, and for some, user reviews to help with your selection.

What to consider when choosing Detectors?

If you're planning to get Detectors, there are a few aspects that can help you choose the right product. In the left menu, you can use the parametric filter to narrow down the selection to match your preferences. We also recommend sorting by popularity or price.

Make your selection easier. Click through our pre-made filters for the category: Detectors

Are you looking for the best Detectors? Browse products sorted by popularity, or consult the reviews from other users.

Cheapest vs. most expensive Detectors

If you are looking for products based on price, you can browse the lowest priced Detectors, or choose to sort by price from highest to lowest.

Detectors – main types

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354 Results
MDT Technologies Motion sensor 55 × 55 mm, 2 buttons, temperature measurement, matte black
Motion Sensor - Interior, mains supply, reach of 10m, compatible with Manufacturer app, connection via Ethernet, night orientation light and adjustable sensitivity, independently functional unit
4,199,-
Buy
In stock 1 pcs at the supplier's
Order Code: MDTT24292
MDT Technologies KNX occupancy sensor 360°, 3 Pyro, brightness measurement, matt white
Detection Sensor - The MDT presence detector is available in several versions, up to 4 pyrosensors and a high-resolution lens, white, ceiling installer, Channel Hkl, Reach 11m, max. range (Ø) presence 5m
4,536,-
Buy
In stock 2 pcs at the supplier's
Order Code: MDTT24306
4.8 26×
iGET SECURITY M3P14 - wireless smoke detector for iGET SECURITY M3 and M4
Smoke Detector - battery-powered , detection reach 100 m, acoustic signals, signal volume 85 dB, features: test button, cover material plastic, operating temperature from -10 to 40 °C, operating humidity from 5 to 90 %, standalone unit
from  684,-
Buy
On the way 1 pcs
Expected 04/05/2026
Order Code: NU106v5
4.5 25×
SONOFF Zigbee Human Presence Sensor
Sensor - for motion detection, functionality based on 5.8 GHz microwave radar, three levels of sensitivity, detection distance up to 4 m, compatible with smart bulbs, Smart Switch and smart LED strips, possibility of fixing the base to the wall with 3M tape or screws, the sensor is fixed magnetically, USB-C power, ZigBee Hub central unit needed, Amazon Alexa support, Google Home, Smartthings, Alice and IFTTT
419,-
Buy
On the way > 5 pcs
Expected 16/04/2026
Order Code: Sonoff23_07
4.0 10×
iQtech Smartlife SS03 Zigbee Smoke sensor, Zigbee 3.0
Smoke Detector - battery-powered , detection reach 10 m, notifications via push notifications, battery indication, features: alarm, cover material plastic, compatible with Tuya and Smartlife, standalone unit, app language options: Czech and English , compatible with Android and iOS
799,-
Buy
On the way 3 pcs
Expected 10/04/2026
Order Code: iQ21TECH144
5.0
Eve Water Guard - Water Leak Detector - compatible with Thread
Water Leak Detector - detects water gas, mains power, sound level: 100dB, compatible with Apple Home, Apple Siri shortcuts and Samsung SmartThings, connect via Bluetooth, standalone functional unit, app with English language support for iOS
2,899,-
Buy
On the way 1 pcs
Expected 03/04/2026
Order Code: Eve22_001
3.0
ONDILO ICO Pool V2, smart water monitor, Cl/Br disinfection
Sensor - water quality analysis, minimal maintenance, durable construction
11,499,-
Buy
On the way 2 pcs
Expected 16/04/2026
Order Code: ONDa24002
4.0
Shelly Gas, CNG Gas Detector, Alarm: Flashing LED & Acoustic Signal, WiFi
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. Alarm sensitivity: 6% LEL, noise level: ?70dB. Smart switching: Yes. Local and remote control: Yes. Dimensions: 89.5mm x 89.5mm x 38mm. Connection not included. Mobile app available in Czech, Slovak, English and other languages.
1,529,-
Buy
Ordered on request
Order Code: SHELLa0009
4.1 38×
EVOLVEO wireless smoke and temperature detector for Alarmex/Sonix
Smoke Detector - detects temperature, battery-powered , acoustic signals, signal volume 85 dB, features: test button, operating temperature from 4,4 to 37,8 °C, operating humidity from 10 to 90 %, battery included, standalone unit requires a central hub
from  636,-
Buy
Ordered on request
Order Code: RY202e1
4.4 28×
EVOLVEO wireless PIR sensor with animal motion detection for Alarmex/Sonix
Motion Sensor - for alarm, Interior, battery powered, input voltage: 9 V, reach of 12m, connection via radio waves, independently functional unit
from  569,-
Buy
Ordered on request
Order Code: RY202b1
4.5
Somfy Indoor motion sensor
Motion Sensor - for alarm, Interior, battery powered, input voltage: 3V, reach of 200m, compatible with Manufacturer app, connection via radio waves, adjustable sensitivity, independently functional unit, application in Czech, applications in Czech and English for Android
2,049,-
Buy
Ordered on request
Order Code: SOMA05
4.5
EVOLVEO wireless outdoor siren for Alarmex / Sonix
Siren - closed system, area of use: security, power supply: Power plug
1,989,-
Buy
Ordered on request
Order Code: RY203f
3.3
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
1,429,-
Buy
Ordered on request
Order Code: Nedis23_002
3.0
Imou gas sensor/detector ZGA1
Gas Leak Detector - mains power supply, detection reach 200 m, acoustic, visual signals, notifications via push notifications, signal volume 85 dB, features self-diagnostics, automatic scenarios and alarm, cover material plastic, power adapter and mounting kit included, requires a central hub, app language: English , compatible with Android and iOS
689,-
Buy
Ordered on request
Order Code: Imou23_40
Somfy Interior motion sensor for Tahoma control unit
Motion Sensor - for alarm, Interior, battery powered, input voltage: 3V, reach of 10m, compatible with TaHoma, connection via radio waves, a central unit is required to function
3,179,-
Buy
Ordered on request
Order Code: SOMF22_02
589,-
Buy
Ordered on request
Order Code: EVE1004
5.0
Solight CO flue gas detector, 85 dB
Gas Leak Detector - detects CO (carbon monoxide), measurement range from 50 ppm, gas detection sensitivity 50 ppm, battery-powered, acoustic, visual signals, signal volume 85 dB, battery indication and display, features alarm, cover material plastic, operating temperature from 5 to 40 °C, operating humidity from 20 to 90 %, ingress protection IP20, battery included, standalone unit
Discounted -13 % 369,- 429,-
Currently Unavailable
Order Code: Solight25092
4.5 29×
Emos GS558
Smoke Detector - battery-powered , acoustic, visual signals, signal volume 85 dB, battery indication, operating temperature from 10 to 40 °C, operating humidity from 30 to 95 %, battery included, standalone unit
499,-
Currently Unavailable
Order Code: EMDET0002
4.2 38×
RETLUX RDT 301
Gas Leak Detector - detects CO (carbon monoxide), measurement range from 100 to 300 ppm, gas detection sensitivity 50 ppm, battery-powered, acoustic signals, signal volume 85 dB, display, features test button and alarm, operating temperature from 5 to 40 °C, operating humidity from 20 to 90 %, standalone unit
649,-
Currently Unavailable
Order Code: RETDET003
4.5 12×
Shelly Blu Motion, Bluetooth
Motion Sesnor , connect through WiFi 2,4 GHz, WiFi 5 GHz and Bluetooth, open system with detection motion compatible with Samsung SmartThings, range: home control, application in English, Czech, German, Slovak and Hungarian, power supply: Battery-Powered,
699,-
Currently Unavailable
Order Code: Shell23_034
4.8 30×
iGET SECURITY M3P1 - wireless PIR motion detector for iGET SECURITY M3 and M4
Motion Sensor - for alarm, Interior, battery powered, input voltage: 3V, reach of 9m, connection via radio waves, battery indication, independently functional unit
from  430,-
Currently Unavailable
Order Code: NU106b
4.8
MOES CO Detector, Zigbee
Gas Leak Detector - detects CO (carbon monoxide), battery-powered, acoustic signals, notifications via push notifications, signal volume 85 dB, battery indication, features self-diagnostics, cover material plastic, operating temperature from -10 to 40 °C,, compatible with Tuya and MOES, requires a central hub, app language options: Czech and English , compatible with Android and iOS
999,-
Currently Unavailable
Order Code: Moes22_37
4.6 11×
Elektrobock LX28B
Motion Sensor - for lighting, Interior, mains supply, input voltage: 230 V, reach of 12m
379,-
Currently Unavailable
Order Code: ELBOCK040
4.9 20×
RETLUX RDT 201
Smoke Detector - battery-powered , detection reach 100 m, signal volume 85 dB
349,-
Currently Unavailable
Order Code: RETDET001

Detectors

Detectors

In the category Detectors on Alza.cz, we currently have a total of 354 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.
Check out products sorted by price starting with the lowest price in the category cheap detectors Find products sorted from the most expensive to the cheapest in the category most expensive detectors Check out products sorted by price starting with the highest price in the category best sellers, best detectors You’ll find products sorted by reviews starting from the highest ranked in detectors reviews
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