---
title: "Description"
canonical: "https://docs.cuesystem.com/space/TOSASG/273547357/Description"
format: markdown
---
The touchONE-sensor-app is a ready-made XPL2 application for occupancy sensor integration using the following controllers:

- controlCUE- versatile
- controlCUE- versatile-d
- smartCUE-versatile
- smartCUE-versatile-d.

The application supports any type of occupancy sensors with dry contact output. Sensor output contacts are connected to versatile ports. One controller permits up to 8 sensors to be connected, i.e. it can handle up to 8 rooms.

> ℹ️ The application has an easy web setup and does not require any XPL2 programming skills.

The following picture describes how the integration of the occupancy sensors with the touchONE reservation system works.

![image](media://bea924a4-5e15-4bf5-93d1-bc1da2c978cd)

The controller and the reservation system panels are connected to Ethernet, which is used for communication between units.