---
title: ELO / EHI (setpoint limiter)
description: "![](https://faqdoc.info/wp-content/uploads/2026/01/Matrix_55__icon_Elektro-Wasser.png) Setting the maximum and minimum setpoint limit when using the external room sensor. Setting range between 5 °C and 30 °C (41 °F and 86 °F). This limits the setpoint temperature input. Prerequisite for use: - External room sensor…"
url: "https://faqdoc.info/en/systemauswahl/alpha-direct-en/alpha-direct-thermostat-55-matrix/elo-ehi/"
updated: "2026-09-30"
category: Alpha direct thermostat 55 Matrix
---

# ELO / EHI (setpoint limiter)

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

Setting the maximum and minimum setpoint limit when using the external room sensor. Setting range between 5 °C and 30 °C (41 °F and 86 °F). This limits the setpoint temperature input.

Prerequisite for use:

- External room sensor A2 or A2F set to sensor mode (→ [SMO](https://faqdoc.info/en/systemauswahl/alpha-direct-en/55-matrix/smo/))

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**ELO**: Setpoint limiter for lowest temperature

**EHI**: Setpoint limiter for maximum temperature