
Best selling Hazard detectors
Here's a ranking of the best products in this category. To give you a quick overview, we've also added some key information about the products.
1. Google Nest Protect V2
With this Google Nest Protect V2 Battery 3-Pack, you are always informed about smoke or carbon monoxide levels in your home, no matter where you are. The package includes three detectors that you can install throughout your house. You connect them to the Nest app on your smartphone or tablet. When a threat is detected, the Nest alerts you with a spoken alarm of 70 decibels. A voice will tell you exactly where the danger is located. The app also keeps you updated on battery status and sensor activity. The green light turns on as soon as the motion sensor detects movement in the dark. Each Google Nest Protect V2 operates on six AA batteries (included).

2. Google Nest Protect
The Nest Protect 2nd Generation is a practical helper in your home. It is a smoke detector equipped with various sensors. Not only does it alert you with a light ring and sound when there is smoke, but it also detects carbon monoxide in the air, which is invisible and odorless to humans. When you turn off the lights, the night mode activates, indicating with a green LED ring that the Nest Protect is functioning properly. You can also use the night light feature, which turns on when you walk by the device, so you don’t have to navigate your home in complete darkness. If an alarm is triggered, you will receive an acoustic warning as well as a notification on your smartphone.

3. Shelly Flood Gen4
The Shelly Flood Gen4 alerts you when water appears where it shouldn't - for example, under your water heater, dishwasher or washing machine. It has an innovative leak sensor cable that covers larger areas and detects leaks beyond a single point to protect your home in an unrivalled way. Multiple leak sensor cables can be linked together to increase the range up to 150 metres. Receive instant alerts directly to your mobile device and create safety protocols to protect your family and property. Shelly Flood Gen4 offers Wi-Fi, Zigbee and Bluetooth connectivity. It also has an integrated web interface that makes it easy to monitor, control and customise settings.

4. Hekatron Genius Plus
Hekatron Smoke Detector Genius Plus including 10-Year Battery. This smart stand-alone smoke detector meets the highest standards of quality and reliability. Developed in a state-of-the-art fire protection laboratory in Europe, it fulfills the highest testing criteria of VdS and is therefore one of the few smoke alarms in Germany to carry the coveted Q quality seal.
Highlights and Details: No battery replacement needed (10-year lifespan), app capability via Smart Sonic, certified to EN 14604, VDS, and Q-Label, permanent self-monitoring, contamination forecast, active contamination tracking, alarm memory, bedroom activated (no status messages or blinking LED at night), Smart Sonic (acoustic data transmission technology), interference suppression at night using real-time clock, automatic compensation for temperature fluctuations through a temperature sensor, mounting according to VdS: single hole/2-hole/stick-on, acoustic, frequency-optimized alarm, operational status display: multicolored LED (green, orange, red) "Soft Flash."
Advanced Applications: The Genius Plus is suitable for challenging environmental conditions, such as in stairwells and corridors, as well as in frost-free basements and attics. Built-in battery, typical battery life of 10 years. Additional functions in conjunction with Genius Home or Genius Pro App and smartphone: detailed status display, history, and action recommendations on the smartphone (on-site diagnosis, creation of maintenance documentation according to DIN 14676, documentation forwarding via the smartphone's "Share" function). Genius Pro and Genius Home App available for iOS and Android in Germany and Austria.
Delivery: Smoke detector, mountings, stick pad, quick guide.

5. Pentatech RA 260
The RA 260 smoke detector from Pentatech is a reliable safety device designed for indoor use. Equipped with a photoelectric principle, this smoke detector detects smoke particles in the air at an early stage and emits an acoustic warning signal of 85 dB to alert to potential dangers. The simple installation allows for easy setup, enabling the smoke detector to be ready for use quickly. With an operating voltage of 9 volts and battery operation, the RA 260 is independent of external power sources, providing flexible placement in various rooms. The certified safety according to VdS and EN 14604 ensures that the smoke detector meets strict safety standards and functions reliably.
- Photoelectric principle for early smoke detection
- Acoustic warning signal with 85 dB for high alert efficiency
- Easy installation for quick setup
- Certified safety according to VdS and EN 14604.

6. X-Sense Smoke alarm set
Never miss an alarm again. As soon as smoke is detected, you receive an immediate warning message on your phone. At the same time, a loud beep sounds at the base station and at each connected detector. This informs all residents that they must leave the house. Set up intelligent security monitoring for your home. The SBS50 base station supports up to 50 devices, including the XS01-M and XS0B-MR smoke detectors (with voice alarm), the XC01-M carbon monoxide detector and other detectors such as the XH02-M, the STH51 thermo-hygrometer and the SWS51 water detector. Thanks to the external connection range of 500 metres, you can secure every corner of your home. Immediate status information. Monitor your home from anywhere and receive instant alarm notifications as well as low battery warnings, faults and more via the X-Sense Home Security app. You'll also be notified when the danger has passed. One-button control. Connect the base station to your Wi-Fi with just one button. By tapping the mute button in the app or on the base station, you can easily mute your entire system. Test via the app. Test the alarm easily and quickly from the app, without having to climb a ladder to press a button on the device itself. Loud and clear alarm. The X-Sense smoke alarm system provides a powerful 100 dB alarm on the base station and 85 dB alarms on all connected smoke detectors. This ensures that everyone in your home is warned of any danger, no matter where they are. Convenient for everyone. With convenient family sharing, up to 12 Family members can control the device via the X-Sense app, receive push notifications, test/mute devices, check alarm status and much more.

7. X-Sense XS01-M Link+ Pro
X-Sense XS01-M Link+ Pro smoke alarm device
The X-Sense XS01-M Link+ Pro smoke alarm is an advanced device that ensures the highest level of security in your home. With its wireless connection technology, you can connect up to 24 devices to create a network that alerts you to threats in every corner of your home. Thanks to its compact size and modern functions, it offers effective protection in both small and large rooms.
A network of connected alarms for more security
With the XS01-M Link+ Pro, you can connect up to 24 devices to a single network so that all the system's alarms are triggered when a sensor detects smoke. This is a particularly useful solution in larger buildings, where the rapid transmission of emergency information can save lives.
Powerful alarm with a volume of 85 dB
The device emits an 85 dB alarm that can be heard clearly even from 3 metres away. The sound frequency has been optimised so that it can be recognised quickly in an emergency situation. This gives you more time to react and leave the building if necessary.
Long service life and no maintenance required
The XS01-M sensor is designed for 10 years of trouble-free operation and its CR123A lithium battery lasts up to 5 years without needing to be replaced. This means you don't have to worry about checking the battery status regularly - the device notifies you automatically with a beep and a notification in the app when the power level is low.
Easy installation and management
Thanks to its compact size and easy installation, the sensor can be placed practically anywhere. All the necessary mounting accessories are included and the installation itself only takes a few minutes. The device operates at 868 MHz, which ensures a stable and reliable connection between the other sensors.

8. X-Sense Kohlenmonoxid-Melder
2.4 GHz Wi-Fi connection not compatible with base station. Simply connect this detector to the X-Sense Home Security app on your smartphone via a 2.4 GHz Wi-Fi network without the need for a hub. Download the app, log in and connect the device. 10 year sensor life. This battery-powered smart carbon monoxide detector has a stable and powerful Figaro electrochemical CO sensor that accurately monitors CO levels in the home, ensuring your family stays protected for 10 years. (Replaceable battery with a lifespan of one year). Instant notifications. Stay connected to your detector and see all notifications, including CO alarm, low battery, malfunction, CO alarm precaution and more. With the device sharing feature, you can add your Family members so you can all keep an eye on your home's safety. Real-time CO and one-button mute. When a CO alarm is triggered, the app shows changes in CO levels in real time. After making sure your environment is safe, you can simply switch off the alarm via the app. CO alarm prevention. As soon as the CO level is above 100 ppm, you will receive an immediate warning message via the app, alerting you to a potential risk without having to wait for the response time, so you can act immediately. Freestanding design. Measuring just 135 × 63 × 24 mm, this smart carbon monoxide detector can be placed freestanding on a shelf or mounted on the wall with the included accessories, giving you peace of mind at home or on holiday.

9. Fibaro smoke sensor
The Fibaro Smoke Sensor is one of the smallest wireless smoke detectors in the world. Unlike other comparable devices, this smoke detector fits perfectly into any interior design thanks to its modern design. Plug and Play: very easy installation without drilling or wiring. It detects a rapid increase in temperature and can trigger an alarm as soon as a temperature threshold is exceeded. There are three levels of sensor sensitivity. It is compatible with any Z-Wave controller and can be integrated with any standard alarm system. It is powered by a single battery with a lifespan of up to two years.

10. Indexa Smoke detector with long RA170Q timer battery 10J 10170
The INDEXA RA170Q smoke detector with long-lasting battery offers reliable protection against smoke development and potential fire hazards. With a lifespan of 10 years, this smoke detector is ideal for long-term use in living spaces, offices, or other enclosed areas. The battery-operated smoke detector is easy to install and requires no complicated wiring. Its compact design allows for flexible placement, while the white color scheme harmoniously blends into various room designs. The smoke detector is an essential safety device that helps to alert you to dangers early, thereby saving lives.
- Long-lasting battery with a lifespan of 10 years
- Easy installation with no wiring required
- Reliable warning in case of smoke development.
