# \[APP\]\[Pro\] OpenTherm GateWay MQTT

**URL:** <https://community.homey.app/t/app-pro-opentherm-gateway-mqtt/77190>\
**Category:** Apps\
**Tags:** app, homey-pro\
**Created:** [March 5, 2023, 8:32pm UTC](https://community.homey.app/t/app-pro-opentherm-gateway-mqtt/77190 "2023-03-05T20:32:37Z")\
**Posts on this page:** 1\
**Showing post:** 176

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**Author:** ![Peter\_Kawa](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/peter_kawa/32/173848_2.png) [@Peter\_Kawa](https://community.homey.app/u/Peter_Kawa)\
**Post date:** [September 28, 2025, 12:44am UTC](https://community.homey.app/t/app-pro-opentherm-gateway-mqtt/77190/176 "2025-09-28T00:44:17Z")

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I prefer to bind IP addresses to MAC addresses (a.k.a. fixed IP’s) on my DHCP server, instead of entering IP addresses on clients \> chances on using duplicate IP’s.

Here’s a little howto about setting up MQTT, and connect a client;  
which should get you going:

> [@\[Tutorial\]\[Pro\] Basic MQTT setup & connect Itho Daalderop NRG.watch interface](https://community.homey.app/t/tutorial-pro-basic-mqtt-setup-connect-itho-daalderop-nrg-watch-interface/139521):
>
> This tutorial is about setting up a basic MQTT system. (and yes I know there’s several other MQTT tutorials around grimacing) Additionally, it tries to explain how to connect a system like the NRG.watch [interface](https://www.nrgwatch.nl/product/itho-cve-rft-wifi-add-on/) for Itho airboxes (no need for the Homey NRG.watch app) Feel free to add missing info, or correct any possible errors. (This is a wiki) Homey: 1 Install 3 MQTT community apps: MQTT Broker [[1]](#footnote-641566-1) MQTT Client MQTT Hub ¹) The broker may run anywhere, but we stick to Homey for now …

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