Is it worth automating my Greenwood Unity CV2 Extract Fan in my bathroom with my IKEA TIMMERFLOTTE if the fan already has a built in sensor to go into boost mode based on humidity levels?

Hardware
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1

I have a Greenwood Unity CV2 Extract Fan in my bathroom that has a built-in humity sensor that turns boost mode on if humidity goes over a certain threshold. I have a an IKEA TIMMERFLOTTE sensor that I thought I’d use for the same reason by inserting a Shelly relay smart switch after my extractor fan isolator switch. The idea being that this would gate power to the fan entirely based on the battery powered humidity sensor (I’d leave the fan switch on the wall turned on so the Shelly is constantly powered).

I bought the Shelly but I’m still struggling with the wiring so at this point I’m wondering if it’s worth doing this in the first place considering the fan already has this built-in functionality and if I’d gain anything else by getting my sensor/smartswitch/HAOS in the loop :thinking:. While I’d like to have a centralized control panel (HAOS) I can consult at any time through my devices I don’t know if this is worth the trouble of fiddling with the Shelly and the wiring.. Unless there’s any more benefits I’m not thinking of.. :sweat_smile:

Here’s hardware and software I currently have:

Software

HAOS Core: 2026.6.4
Home Assistant Operating System: 17.3
Matter Server: 8.5.0

Hardware

Shelly 1PM Mini Gen4
TIMMERFLOTTE
Greenwood Unity CV2 Extract Fan

2

It is not worth the trouble.
You will have to work out how to interact with a system board that have a sensor as a trigger, so it is probably not just soldering some wires on.
The question is also what functionality you gain.
If it is just a sensor tontell you it is running then any of the sensors measuring power usage will do just as well.
If it is the ability to start the fan, then you will have to find a way to do that and the question is then when you want to do it. When the humidity is how gh you already got a functionality for that, so it should be for other cases than humidity.