The installation record.Inside the distribution board.

A DIN-rail module that stores your diagrams and inspection documents inside the distribution board.RailDoc is a DIN-rail module that stores the single-line diagram, floor plan and inspection record inside the distribution board. No missing folder. No disappearing cloud service.

• 100% local
• No subscription
• AREI guidance

You open the board. The diagram is gone.

Paper diagrams get lost during a sale, renovation or move. The document holder in the door is empty. All that remains: an old diagram held with tape and a sticker linking to an online record.

Before

A folder of diagrams, somewhere in the house

With RailDoc

The record inside the distribution board

The diagram that remains is out of date.

A decades-old diagram, handwritten changes, crossed-out notes and torn edges. Which version is current? With RailDoc, the active diagram stays at the board and every change is preserved as a revision.

Before

Scattered versions, nobody knows which is current

With RailDoc

One timeline, every revision preserved

No cloud service to disappear.

A subscription is cancelled, an account belongs to the previous owner, a service disappears. RailDoc works entirely locally and offline: no mandatory cloud, no external subscription.

Before

An account and a subscription

With RailDoc

Local and offline on the module

The entire record fits in one module.

From a home diagram to the A2 plan of an industrial board: store it on the module and it stays with the installation.

One module on the DIN rail.

Everything needed to read or update the record is on the front.

• Status LEDs: the module's status at a glance
• NFC: emergency readout, even without power
• Confirmation button: physically confirms every upload
• USB-C: readout from your browser
• DIN-rail format: clips in beside the circuit breakers

The record lives on the module itself.

Diagrams and inspection documents are stored locally, without a server or account. A new version never overwrites the old one: every change gets its own place in the timeline.

Uploading takes a physical button press.

Activating a new diagram requires a physical press of the confirmation button at the board. Nobody can simply overwrite it remotely.

Readout without power.

Passive NFC for emergency readout: a quick check at the board, even when the installation has no power.

Connected locally, without a detour.

Read the record via USB (Web Serial), Bluetooth (LocalLink) or a local Wi-Fi IP address. Home Assistant connects through a local read-only API: status and project data now, telemetry later.

This chip holds one thing: your record.

And you draw that record yourself.

Free drawing and record software.

For installers and homeowners. No licence fees, no subscription. The web version already works in your browser.

Familiar single-line diagrams and floor plans.

Familiar electrical symbols: complete service entries, single- and three-phase circuits, RCDs and circuit breakers.

Checks as you draw.

Indicative checks based on Belgium's AREI/RGIE: earth resistance, 30 mA and 300 mA RCD sensitivity, cable sizes and circuit distribution. These rules are not legally verified and do not certify compliance.

Solar, EV charging and heat pumps included.

Draw energy circuits as complete circuits in the same diagram, from inverter to charging point.

From drawing sheet to distribution board.

Export to PDF or SVG, or transfer the record to the module. Every upload becomes a new revision.