Blue Sentinel:
low-profile,
high-impact

A self-powered alert system that keeps traffic flowing, protects wildlife and cuts disruption costs

Blue Sentinel detection tag
Blue Sentinel Deterrent Tag
Picture rails

Designed and manufactured in France, built for European networks

Blue Sentinel is simple to install and requires no specialist civil-engineering work. It consists of two main units:

  • A detection beacon, which can either be installed directly on the ground via its concrete base or ground-mounted on the catenary support.
  • An alert beacon, planted in the ground.

Proudly made in France

Every Blue Sentinel unit is designed and manufactured in France, with ISO 9001-certified suppliers and end-to-end quality controls, so every installation performs to the same high standard.

Blue Sentinel operating diagram

Four key benefits

Four strengths that make Blue Sentinel a key ally for securing the rail network
while preserving the surrounding ecosystem.

Blue Sentinel Deterrent Tag

Robust

  • Safe, proven train-detection technology.
  • Low-visibility alert-beacon casings.
  • Materials built for harsh environments and designed to deter theft.
  • Responsive, readily available technical support.
SNCF train

Reliable service

  • Smoother, more regular and uninterrupted traffic
  • Cost-effective from year one.
  • No disruption for train drivers.
  • An ecological and economical alternative to conventional solutions.

Respectful of wildlife

  • Guaranteed ecological continuity: an ethical, biodiversity-friendly approach.
  • No disturbance to local wildlife corridors, the system activates only as a train passes, with low-intensity deterrence.
  • Sound-alert levels configurable independently for each beacon.
  • A range of stimuli that keep wildlife responsive and prevent habituation.
Wild boar

Simple to deploy

  • A connected, energy-autonomous beacon network: up to 200 train passages/day as standard, on solar power.
  • Simple installation: no civil works, no cabling, whatever the terrain: zero impact on rail infrastructure.
  • Adaptable to all environments: forest, mountain, wetlands, open fields.
  • Easy, intuitive supervision via a dedicated web interface and mobile app.
SNCF Réseau
Copyright: SNCF

Blue Sentinel, the future of railway safety

"As wildlife populations grow and rail networks expand, the need for effective, non-invasive protection has never been greater. Blue Sentinel is built for that challenge."

Photograph of Michael Rublon
Michael RUBLON
Head of ElanRail