---
title: Set display to standby mode
description: "![](https://faqdoc.info/wp-content/uploads/2026/01/Matrix_0-1-1-1-1024x1024.jpg) Usecase: In the bedroom when the light from the display appears too bright and disturbing in the dark. **Switching on** Press and hold simultaneously the following keys for 10 sec.: ![](https://faqdoc.info/wp-content/uploads/2026/01/Matrix_55__Icon_up.png) ![](https://faqdoc.info/wp-content/uploads/2026/01/Matrix_55__Icon_open.png) The **DOF** display will then appear, confirming…"
url: "https://faqdoc.info/en/systemauswahl/alpha-direct-en/alpha-direct-thermostat-55-matrix/set-display-to-standby-mode/"
updated: "2026-09-30"
category: Alpha direct thermostat 55 Matrix
---

# Set display to standby mode

![](https://faqdoc.info/wp-content/uploads/2026/01/Matrix_0-1-1-1-1024x1024.jpg)

Usecase: In the bedroom when the light from the display appears too bright and disturbing in the dark.

**Switching on**
Press and hold simultaneously the following keys for 10 sec.:

![](https://faqdoc.info/wp-content/uploads/2026/01/Matrix_55__Icon_up.png)

![](https://faqdoc.info/wp-content/uploads/2026/01/Matrix_55__Icon_open.png)

The **DOF** display will then appear, confirming the setting. After about 30 seconds the display switches to standby mode.

Only the system and function keys are then visible. Changes to the set temperature can still be made.

**Switching off**
Press and hold simultaneously the following keys for 10 sec.:

![](https://faqdoc.info/wp-content/uploads/2026/01/Matrix_55__Icon_up.png)

![](https://faqdoc.info/wp-content/uploads/2026/01/Matrix_55__Icon_open.png)

The **DON** display will then appear, confirming the setting.