---
title: "Channels"
canonical: "https://docs.cuesystem.com/space/SSG/295960589/Channels"
format: markdown
---
## Overview

The controller offers the following channel types:

- IP - up to eight devices can be connected and controlled using TCP or UDP client drivers.
- Sensor - digital input with power supply for sensor connection, e.g. room occupancy sensor. This channel has no commands and it generates events Close and Open - see section Events.
- Serial - one serial controlled device can be connected using the RS-232 or RS-485 mode.
- Universal - four channels are available, every channel can be used as serial RS-232 output, IR output, digital output or digital input.
- Relay - two low-voltage relays are available.

The following table describes how devices can be connected to channels.

|  |  |  |
| --- | --- | --- |
|  | Channel type |  |
| Device type | IP | Serial | Universal | Relay |
| User | IP | :check_mark: |  |  |  |
| Serial |  | :check_mark: | :check_mark: |  |
| IR |  |  | :check_mark: |  |
| Embedded | PJ Link | :check_mark: |  |  |  |
| Digital output |  |  | :check_mark: | :check_mark: |
| Digital input |  |  | :check_mark: |  |

 Basic channel overview looks like this:

![image](media://9bc6ffec-f36c-4f57-a8cf-75afed1ad4fb)

It is possible to select the channel type using the menu on the left side. Then the device can be connected using the **Connect** button, edited using the **Edit** button or removed from the channel using the **Remove** button.

## IP channel - Connect / Edit device

![image](media://caa311d9-789b-44fa-b302-529114758375)

Set the following data:

- Device - select device from IP device list containing all IP devices stored in the section Devices. The list contains User as well as Embedded devices.
- Device name - the user name of the device, e.g. Left display, Right display. The name must be unique within the project.
- IP address or URL - controlled device IP address or URL.
- IP Port - controlled device IP port.
- Username - must be filled if required by the controlled device protocol.
- Password - must be filled if the controlled device is protected by password.

## Serial channel - Connect / Edit device

![image](media://6f354b2b-5620-420f-b7f1-3ad272b66def)

- Device - select a device from the device list containing all serial devices stored in the section Devices. The list contains User as well as Embedded devices.
- Device name - enter an user name of the device, e.g. Left display, Right display. The name must be unique within the project.

## Universal channel - Connect / Edit device

The universal channel can operate in the following modes:

- Serial RS-232 output
- IR output
- Digital output
- Digital input

The mode is automatically set by the connected device driver.

![image](media://0a9ea382-285d-4512-a72e-dc31e64bc004)

- Device - select a device from the device list containing all serial, IR or digital output or digital input devices stored in the section Devices. The list contains User as well as Embedded devices.
- Device name - user name of the device, e.g. Display center (for IR or serial controlled device), Light (controlled by digital input), Button (digital input), etc. The name must be unique within the project.

## Relay channel - Connect / Edit device

Low-voltage relays are typically controlled by digital output driver. It is one of the embedded drivers.

![image](media://15899b6f-568c-42d1-9f0f-62c0bdbe23ef)

- Device - select a device from the device list containing digital output devices stored in the section Devices.
- Device name - enter an user name of the device, e.g. Wall light, Ceiling light, etc. The name must be unique within the project.