Add minimal UniFi Access integration

CODEOWNERS

@@ -898,6 +898,7 @@ source/_integrations/twitch.markdown @joostlek
 source/_integrations/ubiwizz.markdown @imicknl @vlebourl @tetienne @nyroDev @tronix117 @alexfp14
 source/_integrations/ukraine_alarm.markdown @PaulAnnekov
 source/_integrations/unifi.markdown @Kane610
+source/_integrations/unifi_access.markdown @hagen93
 source/_integrations/unifi_direct.markdown @tofuSCHNITZEL
 source/_integrations/unifiled.markdown @florisvdk
 source/_integrations/unifiprotect.markdown @RaHehl

source/_integrations/unifi_access.markdown

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+---
+title: UniFi Access
+description: Instructions on how to configure UniFi Access integration for lock management.
+ha_category:
+  - Lock
+ha_release: 2025.2
+ha_iot_class: Local Push
+ha_config_flow: true
+ha_codeowners:
+  - '@hagen93'
+ha_domain: unifi_access
+ha_platforms:
+  - lock
+ha_integration_type: entity
+---
+
+UniFi Access by [Ubiquiti Networks, Inc.](https://www.ui.com/) is a software and hardware platform for managing door access control. This integration supports managing lock entities through Home Assistant.
+
+## Prerequisites
+
+### Hardware support
+
+This integration supports UniFi Access devices connected to a UniFi controller system.
+
+### Software support
+
+Ensure you are using the latest stable version of UniFi Access software. Early Access and Release Candidate versions are **not supported**.
+
+{% important %}
+**Early Access versions are not supported by Home Assistant.**
+
+Using Early Access or Release Candidate versions of UniFi Access can introduce unexpected changes. If something breaks in Home Assistant while using these versions, support will only be available once that version becomes a stable release.
+{% endimportant %}
+
+### API key
+
+You need an API key in your UniFi Access system with permissions to control locks.
+
+1. Log in to your UniFi Access system.
+2. Navigate to **Access setting page** and select the **Advanced** tab.
+3. Create a new API key with access to editing locations.
+
+## Features
+
+This integration provides support for controlling and monitoring lock entities managed by UniFi Access.
+
+### Lock control
+
+You can unlock supported doors through the Home Assistant interface or automations. These entities will automatically update when there are changes.
+
+## Configuration
+
+This integration uses a config flow, so all setup is done via the Home Assistant user interface.
+
+1. Go to **Settings** > **Devices & Services** in Home Assistant.
+2. Click **Add Integration** and search for **UniFi Access**.
+3. Enter the required information:
+   - Host (IP address or hostname of the UniFi Access controller) and port (defaults to 12445).
+   - API key
+4. Follow the prompts to complete the setup.
+
+## Troubleshooting
+
+### Debugging integration
+
+If you encounter issues, you can enable debug logging for this integration to gather more details.
+
+```yaml
+logger:
+  default: info
+  logs:
+    aiohttp: debug
+    homeassistant.components.unifi_access: debug
+```