The smart smoke detectors from X-Sense offer quite a lot. They not only look stylish but also provide a comprehensive smart package. We have thoroughly tested the detectors.
X-Sense Smoke Detectors for a Safe Feeling from Near and Far
Security needs in residential buildings that operate gas heating or wood stoves require reliable fire protection systems. The X-Sense FS61 set combines classic fire protection functions with modern smart home technology and offers comprehensive smoke monitoring. This test report covers technical specifications, practical experiences, and special features of this system to provide as complete a picture of the product as possible.

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Technical Specifications in Detail
Component | Specification |
---|---|
Smoke Detector Model | XS01-M |
Dimensions | 78 x 78 x 48 mm |
Smoke Detector Power Supply | 3 V CR123A Lithium Battery (replaceable) |
Battery Life | 5 years |
Lifespan | 10 years |
Sensor Type | Photoelectric |
Safety Standard | EN 14604:2005+AC:2008 |
Certifications | TÜV and CE |
Operating Temperature | 4.4-37.8°C |
Smoke Detector Alarm Volume | ≥ 85 dB at 3 m |
Alarm Silence | Up to 9 minutes |
Smoke Detector Operating Frequency | 868 MHz |
Maximum Number of Connected Units | 24 units |
Transmission Range | Up to 500 m outdoors |
Material | ABS plastic |
Weight | 92 g |

Component | Specification |
---|---|
Base Station Model | SBS50 |
Power Supply | 100-240V AC, 5.0V/1.0A Output |
Operating Temperatures | 4.4-37.8°C |
Humidity (max.) | 85 % |
Base Station Alarm Volume | 100 dB |
App | X-Sense Home Security (Android and iOS) |
WiFi Frequency | 2.4 GHz |
WiFi Range | 40 m |
Wireless Protocol | IEEE 802.11b/g/n |

Package Contents and First Impression
The [url="https://www.amazon.de/dp/B0BMQ52BC8?tag=produck-21&maas=maas_adg_79E9A3C218B003091F7FB5092D7A4892_afap_abs&ref_=aa_maas",name="X-Sense FS61 Set",title=""] is delivered in a sturdy, minimalist packaging that contains the following components:
- Base station SBS50
- Six XS01-M smoke detectors including batteries
- Mounting hardware
- USB charging cable and plug
- User-friendly instruction manual

The XS01-M smoke detector appears compact and elegant with its dimensions of 78 x 78 x 48 mm. The ABS plastic ensures robustness and durability. Users replacing existing smoke detectors should note that the smaller dimensions may make color differences on the ceiling visible.
Installation and Setup
Installation is quickly completed and works by simply pairing the smoke detectors. The base station uses the modern ProConnected protocol, while older models in the X-Sense series use Link+ Pro. Since both protocols cannot be used simultaneously in one system, this should be considered when integrating into existing systems. A complete setup including ceiling mounting is completed in about 30 minutes. In our case, we placed the base station in the utility room together with the router, a Fritzbox 7590AX, ensuring a stable internet connection.

Tip: Place the smoke detectors as centrally as possible in the room with at least 30 cm distance from walls and corners for optimal smoke detection. The base station should be installed in an area with good WiFi signal.
Smart Functions and App Integration
The X-Sense Home Security App offers real-time monitoring, status queries, and remote control capabilities. Through the app, alarms can be conveniently silenced even during false alarms (up to 9 minutes). Additionally, the app offers Over-the-Air (OTA) firmware updates to keep devices up to date and implement security improvements.
Alarm forwarding occurs in real-time via push notifications that appear immediately on the smartphone after an alarm is triggered. Particularly useful is the critical notifications function on iOS devices, which penetrate even when the device is silenced. This increases reliability and ensures that alarms are noticed even when the smartphone is set to "Do Not Disturb".



Independent Functionality of Smoke Detectors
Even without connection to the base station, the smoke detectors remain functional. Should the base station fail, the detectors can trigger local alarms; only the push notifications are lost.
Networking Capabilities
The X-Sense FS61 uses an operating frequency of 868 MHz and can be paired with up to 24 wireless units. The transmission range is up to 500 meters outdoors, which is advantageous for larger houses or multi-story buildings. Even at this range, real-time transmission of alarms works smoothly.
Smart Home Integration
Integration into existing smart home systems (e.g., Alexa or Google Assistant) is currently not possible. However, the extensive functionality of the app partially compensates for this and offers an independent, user-friendly solution for smoke monitoring.
Performance and Practical Experience
Response Time and Alarm Strength
In testing, the system showed excellent response time. Even with minimal smoke development, the alarm was triggered after just a few seconds. The alarm volume is ≥ 85 dB, with the base station additionally amplifying the alarm tone to 100 dB. In our two-story house, the signal is loud enough in all rooms to wake even the deepest sleep.
Handling False Alarms
The ability to quickly silence false alarms via app or base station makes handling comfortable. False alarms did not occur during testing in everyday situations like cooking or showering, which can be attributed to the good sensor technology.
Battery Life and Maintenance
The CR123A lithium batteries offer a runtime of up to 5 years. Warning signals inform about low battery status in time. Thanks to the long lifespan of the device (about 10 years), battery replacement is only necessary once or twice during the product lifetime.
Note: For optimal performance, batteries should be replaced with the same model to ensure alarm reliability.
Comparison with Similar Products
Feature | X-Sense FS61 | Nest Protect | Kidde Smoke Detector |
---|---|---|---|
Lifespan | 10 years | 10 years | 7-10 years |
Smart Home Integration | None | Google Home | None |
Battery Life | 5 years | 5 years | 2-3 years |
Certifications | TÜV, CE | UL | UL |
Alarm Volume | 85 dB + 100 dB Base | 85 dB | 85 dB |
Protocol | ProConnected | Wi-Fi | None |
Price | Medium | High | Low-Medium |
The X-Sense FS61 offers many features that are also available in the high-end segment like the Nest Protect, but is available at a medium price. Especially for users who don't need comprehensive smart home integration, the FS61 is a cost-effective alternative.
Frequently Asked Questions (FAQs)
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How can the alarm be deactivated in case of false alarm?
Via the app or by pressing a button on the base station.
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Is ProConnected technology backward compatible with Link+ Pro?
No, the two protocols cannot be used simultaneously. Existing Link+ products cannot be integrated into a ProConnected system.
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How often does the battery need to be changed?
Every five years, which enables particularly low-maintenance use.
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What happens if the base station fails?
The smoke detectors continue to function locally and trigger alarms when smoke develops. Only the push notifications are lost.
Conclusion on the X-Sense FS61 Test
The [url="https://www.amazon.de/dp/B0BMQ52BC8?tag=produck-21&maas=maas_adg_79E9A3C218B003091F7FB5092D7A4892_afap_abs&ref_=aa_maas",name="X-Sense FS61 Smart Smoke Detector Set",title=""] offers a modern, well-thought-out security concept. The combination of photoelectric sensor, robust construction, and easy operation provides a high level of safety. Particularly the long battery life and well-developed app integration distinguish the product.
- Easy installation and intuitive use
- Long battery life
- Reliable alarm and real-time monitoring via app
- Possibility for OTA firmware updates
- No integration into smart home systems
- ProConnected not compatible with older Link+ devices
Overall Rating: The X-Sense FS61 offers an excellent price-performance ratio and is suitable for all users who value safety and user-friendliness. Anyone looking for a modern, reliable solution for their home will find a solid choice in this set.