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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
SONOFF SNZB-05P Zigbee Water Leak Sensor & Detection Cable - Water Leak Detector
SONOFF SNZB-05P Zigbee Water Leak Sensor & Detection Cable
20.90 €
On the way > 5 pcs
Expected 06/10/2026
2 colors
Water Leak Detector - detects Water gas, battery-powered, range: 130 m, compatible with Samsung SmartThings, IFTTT and eWeLink, central unit required to function,, app with Czech...
Added to cart
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Niceboy ION ORBIS Motion Sensor - Motion Sesnor
Niceboy ION ORBIS Motion Sensor
20.90 €
In stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Motion Sesnor , open system with detection motion compatible with Niceboy ION, range: home control, application in English, Czech and Slovak,
Added to cart
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Niceboy ION ORBIS Water Sensor - Water Leak Detector
Niceboy ION ORBIS Water Sensor
20.90 €
In stock 2 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Water Leak Detector - detects Water gas,, compatible with Niceboy ION, battery indication, central unit required to function,, app with Czech language support, app with Czech and...
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Kidde Fire and Smoke Detector 10Y29 - Smoke Detector
Kidde Fire and Smoke Detector 10Y29
Discounted -16 % 20.90 € 24.90 €
In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Add AlzaPlus+ and save instantly 18.81 €
Smoke Detector - signal volume 85 dB, standalone unit
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TP-Link Tapo T100, Smart motion sensor - Motion Sesnor
TP-Link Tapo T100, Smart motion sensor
Great price 20.90 € Save 1 €
In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Motion Sesnor , connect through Radio frequency, closed system with detection motion compatible with Samsung SmartThings, range: security, application in English, Czech, German and...
Added to cart
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TP-Link Tapo S200B, Smart button - Dimmers
TP-Link Tapo S200B, Smart button
20.90 €
In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Dimmers for controlling lights, electronics and other Tapo smart devices, adjustable actions, battery operation (1× CR2032)
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iGET SECURITY EP9 - wireless water sensor for iGET M5-4G alarm - Detector
iGET SECURITY EP9 - wireless water sensor for iGET M5-4G alarm
20.90 €
In stock > 5 pcs at the supplier's
Detector water detection sensor for iGET SECURITY M5 alarm. It is used for water detection in bathrooms, technical rooms, tanks, etc., wherever there is a risk of water flooding....
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EVOLVEO wireless PIR motion sensor for Alarmex/Sonix with tamper protection - Motion Sesnor
EVOLVEO wireless PIR motion sensor for Alarmex/Sonix with tamper protection
from  20.20 €
Currently Unavailable
Motion Sesnor , closed system with detection motion, range: security, power supply: Battery-Powered,
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IMMAX NEO Smart water leak sensor, Zigbee 3.0 - Water Leak Detector
IMMAX NEO Smart water leak sensor, Zigbee 3.0
20.90 €
In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Water Leak Detector - detects Water gas, battery-powered, range: 30 m, sound level: 120dB, compatible with Google Home, Tuya, Lidl Home and Immax NEO PRO, connect via WiFi 2,4 GHz...
Added to cart
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EVOLVEO SecuPro wireless PIR motion sensor - Motion Sesnor
EVOLVEO SecuPro wireless PIR motion sensor
20.91 €
In stock > 10 pcs at the supplier's
Motion Sesnor , connect through WiFi 2,4 GHz and WiFi 5 GHz with detection motion compatible with Tuya, range: security, application in English, Czech and Slovak, power supply:...
Added to cart
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Nedis ALRMMW20WT - Motion Sesnor
Nedis ALRMMW20WT
20.91 €
In stock > 5 pcs at the supplier's
Motion Sesnor , closed system with detection motion, range: security, power supply: Battery-Powered,
Added to cart
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AQARA Water Leak Sensor T1 - Water Leak Detector
AQARA Water Leak Sensor T1
20.99 €
In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Add AlzaPlus+ and save instantly 18.89 €
Water Leak Detector - detects Water gas, battery-powered, compatible with Apple Home, Google Home, Samsung SmartThings, IFTTT and Aqara Home, connect via Bluetooth, battery...
Added to cart
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BOT Smart WiFi GS3 - Gas Leak Detector
BOT Smart WiFi GS3
23.84 €
In stock > 10 pcs at the supplier's
Buy with code ALZADNI10 21.46 € The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Získajte zľavu 10 % s kódom ALZADNI10. Kliknite a kód sa uplatní automaticky.
Gas Leak Detector - mains power supply, notifications via push notifications, signal volume 70 dB, cover material plastic, operating temperature from -10 to 50 °C, ingress...
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MOES IR Human Sensor, Zigbee - Motion Sesnor
MOES IR Human Sensor, Zigbee
21.90 €
In stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Motion Sesnor , open system with detection motion compatible with Tuya, range: security and home control, application in English, Czech, German, Slovak and Hungarian, power supply:...
Added to cart
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FireAngel FA6115 Optical Fire Detector - Smoke Detector
FireAngel FA6115 Optical Fire Detector
21.90 €
In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Smoke Detector - battery-powered , acoustic signals, signal volume 85 dB, battery indication, operating temperature from 4 to 38 °C, operating humidity up to 90 %, standalone unit...
Added to cart
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EMOS GoSmart PIR sensor (motion sensor) with night light, Wi-Fi - Motion Sesnor
EMOS GoSmart PIR sensor (motion sensor) with night light, Wi-Fi
22.16 €
Ordered on request
Motion Sesnor , connect through WiFi 2,4 GHz, open system with detection motion compatible with Tuya, Lidl Home, Smartlife, EMOS GoSmart and Manufacturer app, range: lighting,...
Added to cart
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MOES Human Presence Sensor + Light Sensor, WiFi - Motion Sesnor
MOES Human Presence Sensor + Light Sensor, WiFi
22.90 €
Currently Unavailable
Motion Sesnor , connect through WiFi 2,4 GHz, open system with detection motion, Lights and Human presence compatible with Tuya, Smartlife and MOES, range: lighting, security and...
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Niceboy ION ORBIS Vibration Sensor - Vibration Detector
Niceboy ION ORBIS Vibration Sensor
22.90 €
In stock 2 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Vibration Detector - detects Glass breakage and vibration gas,, compatible with Niceboy ION, battery indication, central unit required to function,, app with Czech language...
Added to cart
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TESLA Smart Sensor Temperature and Humidity Display - Sensor
TESLA Smart Sensor Temperature and Humidity Display
22.90 €
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Sensor - on the wall and on the table, measures temperature and humidity, with a display, 2 AAA batteries, white colour, dimensions 61 × 61 × 23 mm (H×W×D)
Added to cart
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SIGNIFY 17476/31/PN Virginia outdoor PIR motion sensor IP44, white - Motion Sesnor
SIGNIFY 17476/31/PN Virginia outdoor PIR motion sensor IP44, white
Great price 23 € Save 1.90 €
In stock > 10 pcs at the supplier's
Motion Sesnor with detection motion compatible with Manufacturer app, range: lighting, power supply: Power plug,
Added to cart
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BOT Smart Zigbee GS2 gas detector - Gas Leak Detector
BOT Smart Zigbee GS2 gas detector
26.36 €
In stock > 5 pcs at the supplier's
Buy with code ALZADNI10 23.72 € The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Získajte zľavu 10 % s kódom ALZADNI10. Kliknite a kód sa uplatní automaticky.
Gas Leak Detector - mains power supply, detection reach 20 m, acoustic signals, notifications via push notifications, signal volume 70 dB, features alarm, cover material plastic,...
Added to cart
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CO-man Mini C11-L stand-alone carbon monoxide fire detector - Gas Leak Detector
CO-man Mini C11-L stand-alone carbon monoxide fire detector
23.84 €
In stock > 10 pcs at the supplier's
Gas Leak Detector - detects CO (carbon monoxide), measurement range to 999 ppm, battery-powered, acoustic signals, signal volume 85 dB, battery indication and display, cover...
Added to cart
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SONOFF SenseGuard Motion Gen2 Zigbee Motion Sensor SNZB-03PR2 - Motion Sesnor
SONOFF SenseGuard Motion Gen2 Zigbee Motion Sensor SNZB-03PR2
New arrival 23.90 €
In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Motion Sesnor , open system with detection motion compatible with Samsung SmartThings, eWeLink and Home Assistant, range: security, power supply: Battery-Powered,
Added to cart
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SwitchBot Water Leak Detector - Sensor
SwitchBot Water Leak Detector
23.90 €
In stock 5 pcs
2 colors
Order by midnight, get it at the AlzaBox in the morning.
Info
Add AlzaPlus+ and save instantly 19.12 €
Sensor - detection of water level thresholds as low as 0.5 mm, loud alarm, notifications to your mobile phone via the SwitchBot app, sensor compatibility with Wi-Fi and Bluetooth,...
Added to cart
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