---
title: WEH (type of heating)
description: "![](https://faqdoc.info/wp-content/uploads/2026/01/Matrix_55__icon_Elektro-Wasser.png) When changing the heating type, it is always essential to check the sensor mode (SMO) and adjust it if necessary. **WH (water-based)** - -Maximum of 10 thermo-electrical actuators can be controlled --- **EH (electric radiant heating)** - Short-term control…"
url: "https://faqdoc.info/en/systemauswahl/alpha-direct-en/alpha-direct-thermostat-55-matrix/weh/"
updated: "2026-09-30"
category: Alpha direct thermostat 55 Matrix
---

# WEH (type of heating)

![](https://faqdoc.info/wp-content/uploads/2026/01/Matrix_55__icon_Elektro-Wasser.png)

When changing the heating type, it is always essential to check the sensor mode (SMO) and adjust it if necessary.

**WH (water-based)**

- -Maximum of 10 thermo-electrical actuators can be controlled

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**EH (electric radiant heating)**

- Short-term control of electrical consumers with a maximum of 16A (≤ 3.680 W) possible
- Continuous load without external room sensor (only internal temperature sensor): 5 A (≤ 1.380 W) (see SMO)
- Continuous load only with external room sensor (without internal temperature sensor) : 12 A (≤ 2.760 W)