---
title: "KNX access control: guest codes, intercoms and QR access with Can’nX"
description: Manage bookings and guest codes, connect DoorBird, 2N, Nuki or UniFi Access to KNX and create QR access with Access Control, Link’nX and Boss’nX.
canonical: https://wiki.can-nx.com/en/usages/acces/
language: en
---

# KNX access control: guest codes, intercoms and QR access with Can’nX

Can’nX handles access control through three paths. Access Control manages bookings: the guest can receive by email a link to their code, valid for a period, and this code goes through the hardware declared in Link’nX (Zenio or Blumotix on KNX group addresses, or DoorBird Cloud). Link’nX also brings DoorBird, 2N, Nuki and UniFi Access intercoms and locks into scenarios. Boss’nX gives a guest, through a QR code, access to a selection of supervision components.

## Solutions for your need

| Need | Application | Guide |
| --- | --- | --- |
| Declare the hardware of an access point: Zenio, Blumotix or DoorBird Cloud | Link’nX, **Devices → Security & Access → Access Control** | [Declare an access control device](https://wiki.can-nx.com/en/guides/link-accesscontrol-device/) |
| Designate the code administrator and copy their link | Link’nX, **Administrator Configuration** | [Fill in the Access Control administrator](https://wiki.can-nx.com/en/guides/link-accesscontrol-admin/) |
| Run a KNX scene at the start and end of an access | Link’nX, **Scene commands (optional)** | [Associate KNX scenes](https://wiki.can-nx.com/en/guides/link-accesscontrol-scenes/) |
| Create a booking on a site and an access point | Access Control, **Sites**, then **Nouvelle réservation** (New booking) on the site page | [Create a booking](https://wiki.can-nx.com/en/guides/ac-create/) |
| Find, edit or delete a booking | Access Control, **Réservations** (Bookings) | [Edit or delete a booking](https://wiki.can-nx.com/en/guides/ac-change/) |
| Send the code link to the guest and set its sending delay | Access Control, **Envoyer** (Send) and **Paramètres** (Settings) | [Send the guest link](https://wiki.can-nx.com/en/guides/ac-notifications/) |
| Open a DoorBird door or react to the doorbell | Link’nX, **DoorBird (local)** | [DoorBird doorbell, motion and relays](https://wiki.can-nx.com/en/guides/link-doorbird-local-automation/) |
| Operate a 2N switch or react to a code, a card or a call | Link’nX, **2N** actions and triggers | [Operate a 2N switch](https://wiki.can-nx.com/en/guides/link-2n-automation/) |
| Lock, unlock or unlatch a Nuki lock | Link’nX, **Nuki** actions | [Declare a Nuki lock](https://wiki.can-nx.com/en/guides/link-nuki/) |
| Open a UniFi Access door or start a scenario on an authorized access | Link’nX, **UniFi Access** | [Create a UniFi Access action](https://wiki.can-nx.com/en/guides/link-unifi-access-actions/) and [a trigger](https://wiki.can-nx.com/en/guides/link-unifi-access-events-knx/) |
| Give a guest QR access to components, with location or session duration | Boss’nX, **Menu → Guest access** | [Create a QR access](https://wiki.can-nx.com/en/guides/boss-qr-create/) and [configure it](https://wiki.can-nx.com/en/guides/boss-qr-configure/) |

On the guest side, see [view your access code](https://wiki.can-nx.com/en/guides/ac-guest/) and [open a QR guest access](https://wiki.can-nx.com/en/guides/boss-qr-guest-access/). If something is blocked: [Access Control troubleshooting](https://wiki.can-nx.com/en/guides/ac-troubleshoot/) or [QR guest troubleshooting](https://wiki.can-nx.com/en/guides/boss-qr-guest-help/).

## Good to know

- Access Control administration signs in with a link received by email. The access code is generated when the booking is created; the access point cannot be changed when editing.
- The **Délai d'envoi du mail d'accès (minutes)** (Access email sending delay, in minutes), from 1 to 10,080, applies to the whole account.
- KNX addresses of the hardware: DPT 16.001 for writing and deleting the Zenio PIN; communication objects 54, 55 and 58 in DPT 15.000 for Blumotix BX-E-AK12.
- The end scene can be brought forward by 0 to 60 min (**Delay**) before the end of the booking. This delay does not extend the code’s validity.
- A Boss’nX QR is managed with the **Manage topology** right. Its session duration, from one minute to 24 h, is not an end date for the printed QR.

Brand pages: [DoorBird](https://wiki.can-nx.com/en/integrations/doorbird/), [2N](https://wiki.can-nx.com/en/integrations/2n/), [Nuki](https://wiki.can-nx.com/en/integrations/nuki/) and [UniFi](https://wiki.can-nx.com/en/integrations/unifi/). Products: [Access Control](https://wiki.can-nx.com/en/produits/access-control/) and [Boss’nX](https://wiki.can-nx.com/en/produits/bossnx/).

## All Access control guides

### Access and getting started

- [Sign in to Access Control administration with an email link](https://wiki.can-nx.com/en/guides/ac-login/)
- [Access Control: set the administrator email and copy the Admin link](https://wiki.can-nx.com/en/guides/link-accesscontrol-admin/)
- [Link’nX access control: declare a KNX lock or a DoorBird](https://wiki.can-nx.com/en/guides/link-accesscontrol-device/)
- [Link’nX access control: KNX scenes at the start and end of access](https://wiki.can-nx.com/en/guides/link-accesscontrol-scenes/)
- [UniFi Access action in Link’nX: unlock, lock rules and emergency](https://wiki.can-nx.com/en/guides/link-unifi-access-actions/)

### Accounts, permissions and guest access

- [Archive, restore or permanently delete a Boss’nX QR code](https://wiki.can-nx.com/en/guides/boss-qr-archive/)
- [Configure a Boss’nX guest QR code: components, location and session](https://wiki.can-nx.com/en/guides/boss-qr-configure/)
- [Create a guest access QR code and choose its components in Boss’nX](https://wiki.can-nx.com/en/guides/boss-qr-create/)
- [Scan a room’s QR code to open a Boss’nX guest access](https://wiki.can-nx.com/en/guides/boss-qr-guest-access/)
- [Use the Boss’nX guest space: zones, commands and expired session](https://wiki.can-nx.com/en/guides/boss-qr-guest-use/)
- [Read the state of guest access QR codes and rename them in Boss’nX](https://wiki.can-nx.com/en/guides/boss-qr-manage/)
- [View, download and print guest access QR codes in Boss’nX](https://wiki.can-nx.com/en/guides/boss-qr-print/)

### Configuration and use

- [Edit, extend or delete an Access Control booking](https://wiki.can-nx.com/en/guides/ac-change/)
- [View bookings and access codes in Access Control](https://wiki.can-nx.com/en/guides/ac-consult/)
- [Create a booking and a guest access code in Access Control](https://wiki.can-nx.com/en/guides/ac-create/)
- [Access Control: show your guest access code from the link received](https://wiki.can-nx.com/en/guides/ac-guest/)
- [Access Control: send the guest link and set the sending delay](https://wiki.can-nx.com/en/guides/ac-notifications/)

### Devices and integrations

- [2N intercom in Link’nX: switch actions and event triggers](https://wiki.can-nx.com/en/guides/link-2n-automation/)
- [Add a 2N intercom in Link’nX: HTTP API account and XML import](https://wiki.can-nx.com/en/guides/link-2n-device/)
- [Connect a DoorBird Cloud intercom to Link’nX: status and troubleshooting](https://wiki.can-nx.com/en/guides/link-doorbird-cloud/)
- [DoorBird Cloud and KNX: create and delete access codes](https://wiki.can-nx.com/en/guides/link-doorbird-cloud-gateway/)
- [Local DoorBird in Link’nX: declare the intercom and its relays](https://wiki.can-nx.com/en/guides/link-doorbird-local/)
- [Local DoorBird and KNX: doorbell, motion and door opening](https://wiki.can-nx.com/en/guides/link-doorbird-local-automation/)
- [Nuki smart lock in Link’nX: declare the lock and create its actions](https://wiki.can-nx.com/en/guides/link-nuki/)

### Protocols, imports and monitoring

- [UniFi Access: scenario triggers and KNX group addresses](https://wiki.can-nx.com/en/guides/link-unifi-access-events-knx/)

### Questions and troubleshooting

- [Access Control: frequently asked questions about bookings and codes](https://wiki.can-nx.com/en/guides/ac-faq/)
- [Access Control troubleshooting: bookings, guest emails and access codes](https://wiki.can-nx.com/en/guides/ac-troubleshoot/)
- [Boss’nX guest QR access: troubleshooting and frequently asked questions](https://wiki.can-nx.com/en/guides/boss-qr-guest-help/)