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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 353
Airthings Wave Enhance - Air Quality Meter
Airthings Wave Enhance
155.90 €
From 2.87 € per month
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
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Add AlzaPlus+ and save instantly 124.72 €
Air Quality Meter - detects temperature, humidity, air pressure, TVOC (volatile organic compounds), CO₂ (carbon dioxide), noise, battery-powered, visual signals, notifications via...
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MDT Technologies Motion sensor 55 × 55 mm, illuminance measurement, matte black - Motion Sesnor
MDT Technologies Motion sensor 55 × 55 mm, illuminance measurement, matte black
156.06 €
In stock 1 pcs at the supplier's
Motion Sesnor , connect through Ethernet, open system with detection motion compatible with Manufacturer app, range: electrical installation and home control,
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X-Sense FS61 (6+1) Set of 6 XS01-M Wireless Smoke Detectors with SB550 Base Station - Smoke Detector
X-Sense FS61 (6+1) Set of 6 XS01-M Wireless Smoke Detectors with SB550 Base Station
159.90 €
Ordered on request
3 sizes
Add AlzaPlus+ and save instantly 135.92 €
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...
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Homematic IP Rain Sensor - HmIP-SRD - Sensor
Homematic IP Rain Sensor - HmIP-SRD
159.90 €
From 3.68 € per month
In stock 4 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
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...
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Airthings Corentium Home (224 B/m3) - digital radon detector - Air Quality Meter
Airthings Corentium Home (224 B/m3) - digital radon detector
-7 % off new 163.90 € New 177.02 €
From 3.77 € per month
Unsealed - in stock 1 pcs
Air Quality Meter - detects radon, battery-powered, display, features: memory, cover material plastic, operating temperature from 4 to 40 °C, battery included, standalone unit
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HEATIT Z-Smoke Multisensor 230VAC White, Z-Wave smoke sensor - Smoke Detector
HEATIT Z-Smoke Multisensor 230VAC White, Z-Wave smoke sensor
165.90 €
From 3.05 € per month
In stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Add AlzaPlus+ and save instantly 132.72 €
Smoke Detector - detects motion, temperature, mains power supply, detection reach 100 m, acoustic signals, signal volume 85 dB, features: test button and alarm, cover material...
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Ajax MotionCam Black - Motion Sesnor
Ajax MotionCam Black
167.16 €
From 3.84 € per month
Ordered on request
Motion Sesnor , connect through Radio frequency, closed system with detection motion compatible with Ajax, range: security, application in English, Czech, German and Slovak, power...
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Philips Hue Enrave S white + Philips Hue Motion Sensor - Ceiling Light
Philips Hue Enrave S white + Philips Hue Motion Sensor
174.90 €
From 4.02 € per month
In stock > 5 pcs
4 sizes
Ceiling Light - LED, dimmable, luminous flux 1220 lm, adjustable light temperature, connects via Bluetooth, control via app in Czech, compatible with Apple Home, height 6,6 cm,...
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Airthings Corentium Home (224 B/m3) - digital radon detector - Air Quality Meter
Airthings Corentium Home (224 B/m3) - digital radon detector
177.02 €
From 4.07 € per month
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Air Quality Meter - detects radon, battery-powered, display, features: memory, cover material plastic, operating temperature from 4 to 40 °C, battery included, standalone unit
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Airthings Corentium Home 2 - Smart radon detector - Air Quality Meter
Airthings Corentium Home 2 - Smart radon detector
-4 % off new 179.90 € New 187.50 €
From 4.14 € per month
Unsealed - in stock 1 pcs
Air Quality Meter - detects temperature, humidity, radon, battery-powered, visual signals, notifications via push notifications, display, operating temperature from 4 to 40 °C,...
Added to cart
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Airthings Corentium Home 2 - Smart radon detector - Air Quality Meter
Airthings Corentium Home 2 - Smart radon detector
187.50 €
From 4.31 € per month
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Air Quality Meter - detects temperature, humidity, radon, battery-powered, visual signals, notifications via push notifications, display, operating temperature from 4 to 40 °C,...
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MDT Technologies KNX occupancy sensor 360°, 3 Pyro, brightness measurement, matt white - Sensor
MDT Technologies KNX occupancy sensor 360°, 3 Pyro, brightness measurement, matt white
187.59 €
In stock 2 pcs at the supplier's
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...
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Airthings View Radon - Air Quality Monitor - Air Quality Meter
Airthings View Radon - Air Quality Monitor
Great price 193.90 € Save 5.10 €
From 3.57 € per month
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Add AlzaPlus+ and save instantly 155.12 €
Air Quality Meter is designed for indoor environments where it monitors humidity, temperature and the amount of radon in the air. You use batteries or a USB cable to power it....
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Hütermann Pocket radiation meter - dosimeter - Detector
Hütermann Pocket radiation meter - dosimeter
195.90 €
From 4.51 € per month
In stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Detector - pocket-sized, digital radiation alarm, a nuclear accident alert, an atomic explosion, increased radioactivity, sound and vibration alarm, TFT display, Geiger-Müller...
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MDT Technologies KNX occupancy sensor 360° L3, temperature measurement, matt white - Sensor
MDT Technologies KNX occupancy sensor 360° L3, temperature measurement, matt white
203.71 €
In stock 1 pcs at the supplier's
Sensor - Occupancy detector with 3 sensors, temperature sensor and integrated white LED orientation light, version for installation in hollow ceilings, temperature sensor, 3...
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Airthings View Pollution - air quality monitor - Air Quality Meter
Airthings View Pollution - air quality monitor
203.90 €
From 3.52 € per month
On the way > 5 pcs
Expected 15/09/2026
Add AlzaPlus+ and save instantly 152.93 €
Air Quality Meter is designed for indoor environments where it monitors humidity and temperature. You use batteries or a USB cable to power it. Easily connect the air detector to...
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SAFE Motion Guard Outdoor, white - Motion Sesnor
SAFE Motion Guard Outdoor, white
208.90 €
From 4.80 € per month
In stock 5 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 Manufacturer app, range: security, application in English, Czech and German,...
Added to cart
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Airthings Wave plus - air quality, radon, humidity, temperature, VOC, CO2 and pressure sensor - Air Quality Meter
Airthings Wave plus - air quality, radon, humidity, temperature, VOC, CO2 and pressure sensor
-7 % off new 216.90 € New 234.90 €
From 3.99 € per month
Unsealed - in stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Add AlzaPlus+ and save instantly 173.52 €
Air Quality Meter - detects temperature, humidity, air pressure, TVOC (volatile organic compounds), radon, CO₂ (carbon dioxide), measurement range from 400 to 5000 ppm, deviation...
Added to cart
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Ajax MotionCam HDR, white - Motion Sesnor
Ajax MotionCam HDR, white
219.84 €
Currently Unavailable
Motion Sesnor , closed system with detection motion compatible with Ajax, range: security, application in English, Czech and Slovak, power supply: Battery-Powered,
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Ajax MotionCam HDR, black - Motion Sesnor
Ajax MotionCam HDR, black
219.90 €
From 5.06 € per month
In stock 1 pcs
Motion Sesnor , closed system with detection motion compatible with Ajax, range: security, application in English, Czech and Slovak, power supply: Battery-Powered,
Added to cart
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Airthings Wave plus, black - air quality, radon, humidity, temperature, VOC, CO2 and pressure sensor - Air Quality Meter
Airthings Wave plus, black - air quality, radon, humidity, temperature, VOC, CO2 and pressure sensor
234.90 €
From 4.32 € per month
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Add AlzaPlus+ and save instantly 187.92 €
Air Quality Meter - detects temperature, humidity, air pressure, TVOC (volatile organic compounds), radon, CO₂ (carbon dioxide), measurement range from 400 to 5000 ppm, deviation...
Added to cart
- +
Airthings Wave plus - air quality, radon, humidity, temperature, VOC, CO2 and pressure sensor - Air Quality Meter
Airthings Wave plus - air quality, radon, humidity, temperature, VOC, CO2 and pressure sensor
234.90 €
From 4.32 € per month
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Add AlzaPlus+ and save instantly 187.92 €
Air Quality Meter - detects temperature, humidity, air pressure, TVOC (volatile organic compounds), radon, CO₂ (carbon dioxide), measurement range from 400 to 5000 ppm, deviation...
Added to cart
- +
Ajax MotionCam HDR (PhOD) Jeweller, white - Motion Sesnor
Ajax MotionCam HDR (PhOD) Jeweller, white
241.79 €
Currently Unavailable
Motion Sesnor , closed system with detection motion compatible with Ajax, range: security, application in English, Czech and Slovak, power supply: Battery-Powered,
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Ajax WaterStop [1/2] (8EU) white - Remote controlled water shut-off valve (1/2") - Water Leak Detector
Ajax WaterStop [1/2] (8EU) white - Remote controlled water shut-off valve (1/2")
259.54 €
Currently Unavailable
Water Leak Detector - detects Humidity and Water gas, battery-powered, range: 1,1 m, reaction time: 5s, compatible with Ajax, connection via radio waves, protection against...
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