# Product brief: NFC card reader (Modbus)

Part number: EVSE-X-NFC  
Status: Shipped  
Price: on request; in stock  

Brief: PB-EVSE-X-NFC · rev 1.1 · October 2026  
PDF: https://edgetech.eu/briefs/evse-x-nfc.pdf  
Full product page: https://edgetech.eu/electronics/evse-x-nfc

An optional card reader that mounts inside the charger box, with its antenna side against the lid, so cards are read through the lid. It reads ISO/IEC 14443 cards and connects to the Modbus line with four wires. Use it with any card as a local lock and unlock, or with a Dutch laadpas over OCPP.

![NFC card reader EVSE-X-NFC: small green board with four corner holes and a 4-pole terminal marked + A B −](https://edgetech.eu/img/products/evse-x-nfc-three-quarter.webp)
![EVSE-X-NFC parts side seen from above](https://edgetech.eu/img/products/evse-x-nfc-top.webp)
![Flat antenna side of the EVSE-X-NFC with four corner holes](https://edgetech.eu/img/products/evse-x-nfc-flat-side.webp)

Flats and VvE car parks where each user pays for their own kWh; company car parks that should not charge the neighbours' cars; Plaza Charge poles; and any charger that must accept a public charge card.

## Key facts

| Specification | Value |
|---|---|
| Function | Reads NFC cards through the lid of the charger box and passes the card ID over Modbus |
| Cards | ISO/IEC 14443 (NFC-A); identified by the card's UID |
| Connection | 4-pole terminal: +12 V, A, B, GND (marked + A B −), on the Modbus RS-485 line of the charger |
| Mounting | Inside the box, flat antenna side against the inside of the plastic lid; no hole in the lid needed; 4 × Ø3.2 mm corner holes |
| Dimensions | Board 76 × 42 mm; 12 mm high overall |
| Wiring clearance | Leave 25 mm free in front of the terminal for the wires |
| Modes | Local whitelist (no back-office), or Dutch laadpas over OCPP 1.6J (authorisation and billing by a back-office) |
| Whitelist | Managed by the owner in the app; number of cards to be confirmed |
| OCPP path | Depends on OCPP 1.6J being finished into a product for your project (working implementation, not yet deployed) |
| Made in | Europe |


## CAD and drawings

- 3D model (STEP): https://edgetech.eu/cad/evse-x-nfc.step
- Drawing (PDF, A3): https://edgetech.eu/cad/evse-x-nfc.pdf
- Drawing (SVG): https://edgetech.eu/cad/evse-x-nfc.svg

For fit and installation only, not for manufacture. Outline, mounting holes, connector positions and component height envelopes; dimensions marked ≈ are estimated.

## Contact

info@edgetech.eu · https://edgetech.eu