Smoke alarm

  • Connected


    Remote maintenance without entering the home

  • Interconnection


    Up to 25 interconnected sensors and accessories

  • Design


    Facilitates acceptance of the detector by residents

  • Smoke

  • 5 years*

  • LoRaWAN

Reliable at all times, for maximum safety

In less than 5 minutes, a fire can spread and fill a room with toxic and dangerous smoke.

Every second counts to warn occupants and enable them to react quickly.

Our smoke detectors are designed to operate optimally for 10 years, and to react quickly to the slightest sign of danger.

Request a quote
Smoke detector. 10-year battery / Détecteur de fumée

The detector features Air 360° technology for ambient air analysis. Featuring large openings at the rear, this exclusive design allows gases to flow into the heart of the product for fast, reliable analysis.

By entering the detector, insects can disrupt the device and cause false alarms. The device is therefore equipped with reinforced anti-insect protection. The product’s external design forms a barrier that effectively limits the entry of large insects.

The product features a powerful audible alarm, with a range of 85dB at 3m. By way of comparison, this represents the same sound volume as a TGV passing through your corridor.

The connected detector that saves you time!

GUARD is specially designed to meet the needs of lessors and property maintenance specialists.

The detector is available with different radio protocol options.

Smoke alarm. 10-year battery / Détecteur de fumée

Remote monitoring

When a fire breaks out, the product triggers an alarm to alert the occupant. Our connected detector is initially programmed not to transmit fire alarms. If you wish to react to these warnings or carry out checks, you can adjust the device's settings or use the services of an authorized remote monitoring company.

Remote maintenance

Be alerted in real time to detector faults, low batteries or other critical parameters. Simplify the management of your thousands of detectors, while ensuring the safety of your residents.

The first detector designed for professionals

Do you have several thousand homes fitted with detectors?

Operational management of the installed base can quickly become complex, due to frequent changes of residents, maintenance problems and necessary replacements.

Protecting occupants and ensuring regulatory compliance requires a proactive approach.

Our solutions are specifically designed to meet these challenges!

Electronic maintenance certificate

After each maintenance operation, a unique certificate is recorded in the product's secure NFC chip. Detector maintenance (cleaning + function test) is thus certified as compliant by the operator.

Digital detector logbook

QR Code + application to monitor the installation and complete maintenance of a fleet of detectors. The digital logbook is a tracking tool specifically designed to meet the needs of lessors and property maintenance specialists.
Smoke detector. 10-year battery / Détecteur de fumée

QR'SAFE simplifies the use of detectors

Would you like to raise your residents’ awareness of fire risks, while providing them with clear information on how to use and maintain their detectors?

Enhanced security

QR'SAFE is a QR Code label to be stuck near the detectors so that occupants can learn how to use them optimally thanks to our advice.

Information always available

Residents simply scan the QR Code to access an online web page with all the information they need about their detector: operation, use, test frequency, maintenance, downloadable instructions, videos, etc.

Interconnected detector(s)

Each detector is equipped with a wireless communication module. The devices use radio frequencies to exchange information between detectors on the same network, or with dedicated accessories.

Network of interconnected detectors

When a detector detects the start of a fire, all interconnected detectors in the network are triggered simultaneously.

Compatible with REMOTE

Remote control of ceiling-mounted detectors. A single remote control can operate detectors in all homes

Compatible with ALERT deaf and hard-of-hearing kit

Alarm with strobe flash and vibrating cushion. Relays alerts from detectors up to 100 meters in open field
Smoke alarm. 10-year battery / Détecteur de fumée

NAVIXIS: the digital logbook for monitoring detectors

Smoke detector. 10-year battery / Détecteur de fumée

Complete history

Traceability of installation and maintenance of each device: useful information for insurance purposes or regulatory inspections

Ease of management

Information is stored and accessible online for simplified, centralized monitoring of a fleet of several thousand products.

API interface and connectors

The digital notebook integrates easily with your favorite management software thanks to our APIs and dedicated connectors

Automated tracking

The logbook can be configured to send reminders when it's time to check or replace products

Suitable for all installation configurations

Universal** mounting base

Simplifies replacement of other brands of detectors without drilling new mounting holes

Compact mounting base

Only 3 cm in diameter to avoid damaging the installation surface

Approved** 3M adhesive fastener

CE-certified mounting device for installing the detector without screws or plugs. No need to drill through walls where asbestos, pipes or cables are present

Anti-tear detection

Triggers an alert message in the application if the detector is removed from its mounting base

Rip-off protection

Lockable mounting base to reduce the risk of detector removal in rental accommodation
Smoke detector. 10-year battery / Détecteur de fumée

Control your detector with your fingertips!

Need to test or stop your detector’s alarm?

It’s easy and simple to do, thanks to the large touch-sensitive button on the front of the product

Smoke detector. 10-year battery / Détecteur de fumée

Silence function

Stops the alarm and/or puts the detector on standby for 10 minutes without removing it from its base.

8-hour beep delay

Temporarily silences fault beeps until detector is replaced

Signal light

Discreet LED indicator in standby mode, powerful in alarm mode


  • Smoke


    Technology: Photoelectric smoke detector
    Optical smoke detection by
    diffused light (Tyndall effect)


  • Certification


  • Warranty

    5 years***

  • Mounting type

    Wall or ceiling

  • Terms of use

    Indoor environment
    Temperature: -10°C to +50°C
    Humidity: 0% RH to 99% RH

  • Set contents

    1 detector
    1 CR123 battery
    1 BASE+ mounting base
    2 nylon screws and plugs
    1 user manual

  • Connectivity

    • Smoke alarm. 10-year battery / Détecteur de fumée


Reference Battery Radio
X855LS 5 years LoRaWAN - Sigfox

5-year battery life*

  • Very low power consumption for the detector and on-board electronics
  • Includes 1 replaceable CR123 lithium battery
Smoke detector. 10-year battery / Détecteur de fumée

Sustainable and eco-responsible

Nexelec is committed to responsible electronics. Our approach integrates respect for the environment right from the design stage. We choose sustainable materials, reduce energy consumption and aim to increase the longevity of our devices.

Read our environmental policy

Download the GUARD environmental datasheet

Discover the 2024 Fire Safety catalog!

For over fifteen years, Nexelec has been dedicated to building surveillance, with occupant safety at the heart of its commitment.

Discover our range of reliable and innovative stand-alone detectors.

Read the catalog
Smoke detector. 10-year battery / Détecteur de fumée

Who says a LoRaWAN smoke detector can't be stylish?

Most residents consider smoke detectors to have an imposing and unattractive design.

Our product combines technology with a modern, minimalist design that blends harmoniously with any interior décor.

Design & Performance

*The battery is designed for a non-guaranteed life of 5 years: battery life may vary. Please refer to the “Precautions and Limitations” section of the user manual.

**Optional accessories available on request

***Refer to the “Warranty” section of the user manual