Sentinelle
A private residential infrastructure for intelligent security, surveillance and automation — designed around your property, controlled locally where practical, and built to remain yours.
Not another closed ecosystem
Most home security and smart-home solutions lock you into a subscription, depend entirely on someone else's cloud, and limit what you can add later. Every Sentinelle installation is designed specifically for your property — not adapted from a generic package.
Sentinelle is the top of three levels
Not every home needs the same thing. Some people just want to keep an eye on one specific spot. Others want a real security system that misses nothing and answers to no one but them. Sentinelle is our complete infrastructure — and it's the top of a ladder, not the only option.
Each level keeps everything the one before it does and builds on it — nothing gets replaced when you move up, and most Vigie installations can grow into full Sentinelle later on the same equipment already in your home. Vigie's detailed pricing by property size, and Sentinelle's Ongoing Care tiers, are available on request.
Not sure which level fits? Try the two-minute estimate — a few questions about what you actually need, an indicative tier and price before requesting a formal proposal.
What this looks like at home
Two quick, illustrative examples — not real installations — to make the difference between tiers concrete.
Illustrative scenarios, not actual clients — to show what each tier looks like in practice.
Deployment examples
Conceptual schematics for discussion, not equipment lists or final engineering drawings. They show how the three levels can scale from a focused watch point to a complete private infrastructure. The exact architecture is defined during the Audit & Design phase.
Your hardware, or ours
Sentinelle isn't tied to a proprietary box. It can run on suitable hardware you already own, or on a pre-configured Sentinelle Appliance ready to become your property's local infrastructure.
Simple to start. For supported hardware, deployment begins by connecting the installer and booting the machine — the base platform installs itself from that point on. Configuration, integration and commissioning are then completed as part of your Sentinelle project.
A complete infrastructure service
Sentinelle, our complete infrastructure tier — see "Choose your level of vigilance" above if Veille or Vigie fits what you actually need better. We don't sell hardware on its own. We deliver a complete infrastructure and systems-integration service — engineered, tested, and documented.
Built to outlast any one vendor
Your home should keep working even if:
- your internet connection goes down,
- a manufacturer stops supporting a product,
- a cloud service changes its pricing overnight,
- or you simply want to add something new next year.
The same rigor, every project
Every project, regardless of size, follows the same defined process — a repeatable methodology, not ad-hoc technical work.
Priced on engineering, not device count
This section covers Sentinelle specifically — Veille and Vigie pricing is above, under "Choose your level of vigilance." The value is in the engineering, the integration, the security posture, the documentation, and the fact that the system is built to still make sense in five years — not in how many boxes get mounted on a wall.
| Property profile | Typical project |
|---|---|
| Small apartment / studio | €2,200 – 2,600 |
| Standard detached house | €3,000 – 4,000 |
| High-end / large property | €4,500 – 7,000 |
| Complex estate / multiple buildings | On request |
Every project starts with an Audit & Design phase ({auditPrice}, deducted from the final project price if you proceed) so the quote reflects your actual property, not a guess. Hardware, cameras, and on-site installation labor are quoted separately based on your specific equipment needs.
Optional, never required
A Sentinelle system is designed to look after itself, with no subscription at all. Maintenance updates follow a controlled patch strategy, applied at a quiet time so they don't get in your way. That's not a paid feature — it's how the system is built. For clients who want an ongoing relationship — someone proactively watching, available when something needs attention — three levels of care.
| Included | Essentiel | Confort | Premium |
|---|---|---|---|
| Security-patch strategy & safe self-maintenance | ✓ | ✓ | ✓ |
| Proactive monitoring & advance alerts | — | ✓ | ✓ |
| Configuration & automations backup | — | ✓ | ✓ |
| Support response | Next business day | Same day | Priority line |
| Remote access to your system, anywhere | — | ✓ | ✓ |
| Configuration changes & new devices | — | ✓ | ✓ |
| Application updates, tested before they reach you | — | — | ✓ |
| Preventive maintenance | — | — | ✓ |
Prefer no subscription but still want remote access set up permanently? Available as a one-time setup instead — ask for details.
Want your footage backed up off-site too? Available on Premium — using storage you own, not ours. We help you set it up; we never keep a copy of the key.
Why Sentinelle
| Traditional installer | Sentinelle |
|---|---|
| Closed ecosystem | Open architecture |
| Subscription-dependent | Local-first operation |
| Limited integrations | Built for interoperability |
| Vendor lock-in | Hardware independence |
| Basic motion detection | AI-assisted detection |
| Difficult to evolve | Designed for future expansion |
| Often cloud-reliant | Privacy by design |
Common questions
What is Sentinelle?
How much does Sentinelle cost?
Do I need to buy hardware, or does Graphene-BSM supply it?
Is there a mandatory subscription?
Is Sentinelle available in Vietnam?
What happens during the Audit & Design session?
Begin with an Audit
- Schedule your Audit & Design session
- We review your property and your actual needs
- You receive a fixed-price proposal and implementation plan
- We build, test, and document your system
- Guided handover — your system, explained, on your terms