# \[APP\] Shelly - Smart solutions for every home and office

**URL:** <https://community.homey.app/t/app-shelly-smart-solutions-for-every-home-and-office/765>\
**Category:** Apps\
**Tags:** app, official, homey, homey-pro, homey-cloud\
**Created:** [August 28, 2018, 8:54pm UTC](https://community.homey.app/t/app-shelly-smart-solutions-for-every-home-and-office/765 "2018-08-28T20:54:43Z")\
**Posts on this page:** 1\
**Showing post:** 1634

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**Author:** ![M-a-d-m-a-n](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/m-a-d-m-a-n/32/34271_2.png) [@M-a-d-m-a-n](https://community.homey.app/u/M-a-d-m-a-n)\
**Post date:** [March 1, 2021, 12:05pm UTC](https://community.homey.app/t/app-shelly-smart-solutions-for-every-home-and-office/765/1634 "2021-03-01T12:05:33Z")

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I didn’t change anything on the Shelly, it was apparently configured correctly as relay. If I use the first screen of the device in Homey (with the slider) I get the 400 error message: “400: Onbekende fout, weet je zeker dat jet het juist IP adres hebt opgegeven en dat het Shelly apparaat op hetzelfde netwerk zit als Homey?”

If I use the second screen (with the 3 buttons, Up, Circle, Round), I don’t get an error message. But if I change a setting, I can hear the Shelly click and hear the ventilation change, it automatically resets after a few seconds.

In the previous version of either Homey or Shelly App. it added two devices, so I used these instructions to add flows for the ventilation to go either Low, Medium or High:

> [@Duco mechanische ventilatie besturen met Homey](https://community.homey.app/t/duco-mechanische-ventilatie-besturen-met-homey/16804/21):
>
> Of een Shelly 2.5 als je Wifi in die buurt hebt!

Changing the settings via the Shelly website itself works correctly, there it also shows the two separate channels.

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