
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
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.

2. X-Sense XC01-M Link+ Pro CO Sensor
X-Sense XC01-M Link+ Pro CO detector.
The X-Sense XC01-M Link+ Pro offers the highest level of protection against the risk of CO poisoning. Thanks to its high-precision electrochemical sensor and its ability to connect wirelessly to other alarms on the network, the device offers reliable performance. When a sensor detects a threat, all connected devices are activated, increasing safety throughout the home.
Precise measurement and storage of the highest CO concentrations.
The XC01-M is equipped with a highly sensitive electrochemical sensor that immediately detects the presence of carbon monoxide in the air. An easy-to-read LCD display shows the current CO concentration and a memory function saves the highest recorded values so that you can monitor the pollutant levels even when you are away.
Networks up to 24 connected devices
The XC01-M sensor can be part of a network of up to 24 (mask) Link+ Pro devices that work together to increase security. If a sensor detects a threat, all alarms in the network are triggered immediately. The system is ideal for larger homes and facilities.
Test and control via the app
With the mobile app, you can test the sensor's performance at any time without leaving your location. This function eliminates the need to use a ladder to manually test the device, which is both convenient and safe. The app also notifies you of low battery or other important events.
Powerful alarm with a volume of 85 dB
If the carbon monoxide concentration exceeds a safe level, the sensor emits a loud 85 dB alarm. This sound is loud enough to alert all household members, even if they are in another room.
Long life and easily replaceable batteries
The XC01-M has a lifespan of up to 10 years. This means that you can enjoy the protection for a long time without having to replace the device. The device is powered by a replaceable CR123A or CR2/3A battery, which ensures a long service life, and low power levels are indicated on the display and through in-app notifications to avoid unexpected interruptions.

3. X-Sense SD11
X-Sense SD11 photoelectric smoke detector. The X-Sense SD11 is a photoelectric smoke detector designed for maximum safety and ease of use. It immediately detects dangerous smoke produced by smouldering materials and is therefore ideal for early fire detection. Compared to conventional ionisation sensors, the SD11 minimises the risk of false alarms caused by water vapour or cooking smoke, making it much more convenient to use.

4. Hikvision DS-PDSMK-S-WE - rechargeable battery - 3 V - 10.2 cm - 35 mm - 125 g - -10 - 60 °C
The Hikvision DS-PDSMK-S-WE Ax Pro Smoke Detector is a reliable security device designed to provide early warnings of smoke hazards. With a compact design and easy installation, this smoke detector is ideal for indoor use. It is powered by a long-lasting battery that delivers a voltage of 3 V. The smoke detector is equipped with an optical warning signal that immediately captures attention in the event of an alarm. Thanks to wireless transmission technology, the smoke detector can be placed flexibly without the need for complex wiring. The wireless range of up to 800 meters allows for effective communication with other security devices in the system. The DS-PDSMK-S-WE is suitable for operation in a temperature range of -10 to 60 °C, making it a robust choice for various environments.
- Optical warning signal for immediate alert
- Wireless transmission technology for flexible installation
- Wireless range of up to 800 meters
- Operates in a temperature range of -10 to 60 °C.

Hikvision DS-PDSMK-S-WE - rechargeable battery - 3 V - 10.2 cm - 35 mm - 125 g - -10 - 60 °C
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. Jalo Kupu 10
The Kupu 10, designed by Harri Koskinen, is a battery-operated smoke detector for home use. It comes with an integrated, non-replaceable lithium metal battery that lasts up to 10 years, which corresponds to the maximum recommended lifespan of smoke detectors. The automatic activation upon installation and the absence of battery replacements guarantee your home the highest level of safety for up to 10 years. In addition to the mounting plate included for easy installation, the automatic self-test function and the test function that can be activated across the entire front are further features of this life-saving device. Kupu smoke detectors use photoelectric detection methods to distinguish smoke from various fire sources. The photoelectric (optical) detector is triggered when infrared rays are deflected by smoke particles within the housing and reach the sensitive sensor. The integrated self-test function ensures a hassle-free product lifespan of up to 10 years. When smoke is detected, the device emits a loud and continuous alarm to alert residents and neighbors. To avoid false alarms, the smoke detector conducts regular checks to measure air quality. However, if a false alarm does occur, you can temporarily deactivate the smoke detector using the convenient mute function for 8 minutes. If heavy smoke is detected during the mute period, the alarm will be reactivated for your safety. When the smoke detector reaches the end of its lifespan, it will independently warn you with short beeps for up to one month about the weak batteries.

7. Abus RWM165
Suitable for use in bedrooms, living rooms, children's rooms and hallways. The wireless smoke detector RWM165 warns reliably and in good time at 85 decibels in case of smoke development and thus saves your life and that of your family. It is tested according to DIN EN14604, certified according to the current VdS guideline 3131 (3515 radio) and has the Q-label. Permanently installed battery (3V lithium). Mute option. Regular self-test with automatic error message. Low battery warning tone. Large test button. Anti-theft device. Radio frequency 868 MHz.

8. Tellur Smart WiFi Smoke and CO Sensor white
The Tellur Smart WiFi Smoke and CO Sensor is an advanced hazard detector that detects both smoke and carbon monoxide. This device provides a reliable safety solution for residential and workspaces. With a compact design measuring 120 mm in diameter and 31 mm in height, the sensor seamlessly blends into any environment. It is compatible with both iOS and Android operating systems, allowing for easy integration into existing smart home systems. Weighing only 150 grams, the sensor is easy to install and handle. The white colour ensures discreet placement in various rooms. The sensor is designed to provide early warnings of hazards to ensure user safety. With WiFi functionality, alerts can be sent directly to mobile devices, enabling immediate response to potential dangers. This hazard detector is an essential addition to any home or office, creating a safe environment.

9. Csdk SL Temperature, smoke, and CO detector with replacable batteries
The temperature, smoke, and CO detector from Csdk SL is a reliable safety device designed for use in residential and commercial spaces. This device provides comprehensive protection by detecting temperature changes as well as smoke and carbon monoxide (CO). The use of replaceable batteries ensures continuous functionality, allowing users to rely on long-term safety. The detector is battery-operated, which enables flexible installation in various locations without the need for a fixed power source. With its user-friendly operation and compact design, the device seamlessly integrates into any environment. The combination of temperature, smoke, and CO monitoring makes this detector an essential component of any safety equipment to detect and report potential hazards early.

Csdk SL Temperature, smoke, and CO detector with replacable batteries
10. Aqara Water leak detector
The Water Leak Sensor T1, WL-S02D by Aqara is a reliable hazard detector specifically designed to protect your home from water damage. With its IP67 protection class, it is both waterproof and dustproof, making it suitable for use in humid and dusty environments. The sensor is compatible with the Apple Home app and other HomeKit-enabled devices, allowing for smart control and automation. Its compact design enables placement in nearly any location, providing comprehensive protection for your property.
Highlights:
- Supports OTA updates for continuous improvements
- Compatible with Google Assistant, Amazon Alexa, and SmartThings
- Operates even with unstable or disconnected Wi-Fi connections.
