Is there anyway to use a light as a switch? Our home uses Lutron lighting, and the exhaust fans in the bathrooms are all type âlightâ (they switch the fan light on as well).
There is a helper to make a switch look like a light, but there doesnât sppear to be an easy way to make a light look like a switch. 
@fresnoboy There is no need to convert it to a switch. I will do a FAQ on how to do this now. Stay tuned.
Blacky 
Wow, that was fast. Thanks!
FAQ - How can I use a light domain for the âFan Switchâ
Sometimes depending on what you are using to control your fan HA show it as a light entity (light domain) and you are unable to enter it into the âFan Switchâ input.
Light domains will work in the âFan Switchâ input.
The step below will walk you through the process on how to enter in your light domain into the âFan Switchâ input.
Copy your entity ID for your fan that has a light domain.
Open up and automation using the blueprint. Enter in any switch, donât worry we will change this in the next step.
Click on the 3 dots top right and edit in YAML. We are looking for the fan switch entity ID as shown below. You will see the switch (entity) you entered in. Now just paste the fan light domain entity in replacing the switch entity and click save.
Go back by clicking on the 3 dots top right and âEdit in visual editorâ
You should see your fan entity now selected. Fill out the rest of your automation settings and click save.
Your done 
You can still update the blueprint when one becomes available and all your settings will be okay.
Enjoy
Blacky
Back to FAQ: Click Here
Curious, all my Caseta switches came in a âswitchâ and all dimmers as âlightâ, but its been a while since Iâve added anything new.
Which switch are you using?
We have a homeworks QS system. Amazing system in general with geeat home assistant support.
I should have thought of trying that! Thanks, will implement it today.
Hallo, i try this automation now. but it doesent fire. What make i wrong
alias: Bad Duschen
description: ""
use_blueprint:
path: Blackshome/bathroom-humidity-exhaust-fan.yaml
input:
trigger: sensor.tempkuhlschrankkuche_humidity
fan_switch:
entity_id: input_boolean.bad_dummy
rising_humidity: 4
falling_humidity: -5
time_delay: 10
light_switch:
entity_id: light.bad
light_time_delay: 15
include_light_control:
- use_brightness
light_brightness: 25
include_automation_link: enable_automation_link
automation_link_time_delay: 15
automation_link:
- input_boolean.bad_toggle_auto
Maybe you trigger is wrong. Please have a read of this in the FAQ.
First step is this one
Q: How do you set up a Derivative Sensor Helper?
A: Please follow these steps Click Here
Once you have that set up, the next step is this one
Q: I have set up a âDerivative Sensor Helperâ but how do i set up the automation settings?
A: Please follow these steps Click Here
Blacky
This is is great!
I have setup this in my main bathroom and its working well, however am struggling with an ensuite using the same setup (another aeotec multisensor 6 setup etc). The sensor is clearly reading humidity ok but the derivitive values are tiny - and the deriviative is setup exactly the same with the same time period etcâŚ
Any ideas? The sensor has the same settings as the bathroom as I assumed it was somethere there, e.g. reporting time fo the sensor etcâŚ
Thank you and Happy Christmas / holidays!
Hi Alex, glad you like the blueprint.
Make sure you are looking at the correct derivative as your en-suite is set for hours not minutes.
It also looks like your humidity sensor is reporting in hours.
Let us know if this fixes it for you.
Blacky
Hi, is anyone else able to import the blueprint? Looks like the git hub links are dead.
Firstly welcome to the community.
Everything is back up and running, please try again.
Thanks for your patience.
Blacky
Thanks @Blacky , appreciate the time and response!
Yeah, thats the weird thing, thats the correct deriviative (there are only two).
The time period is set to minutes, and the underlying humidity sensor has a 60 second reporting period, so should be reporting every minute. Although graph below suggests an less frequent update / time periodâŚ
Havent figured out (yet!) why its reporting % change hourly!!
Screenshots below, in case Im missing something! Thanks!
No problem Alex 
Sometimes things just canât be found easily and sometimes they just go wrong. I would just delete it and try again but you probably done that already.
Your first screen shot looks good. The last one (Ensuite Humidity), is it reporting in minutes as it doesnât look like it? Looks like hours maybe this is it.
Blacky
Hello
I change my domotic from domoticz to HA
In domoticz i have a script for my humidity, who control the average humudity and in the same script the control of the suddendly change in the bathroom
This script : https://www.domoticz.com/wiki/Humidity_control
But i have 2 bathrooms⌠My first question is if i must install the blueprint for each bathroom or if the same can have 2 bathroom identity sensor?
Yhankâs
Hi @Blacky,
I am new to HA and would like to try your blueprint.
Try to set it up for an Itho fan with 3 modes so I create scripts for High, Medium and Low like @balk77.
What I donât understand is how to link the scripts to the âFan Switch *â, âInput - Fan Speed - Low Speed Switch (Optional)â and âInput - Fan Speed - Switch Off (Optional)â settings.
Could you please help me out?
You install the blueprint once but you create 2 automations from it. That is the beauty of blueprints and why we use them. You just click on the blueprint fill out your information and click save. Then you do it again for the next bathroom.
You need a seperate humidity sensor in each bathroom and from that sensor you have to create a Derivative Sensor Helper.
A good starting point is in the FAQ but here is the direct link to get started Click Here
Blacky
Hi Mark, and welcome to the community.
Okay so you have 3 scripts of each fan speed. You then enter in the correct script into the input.
Fan Switch = High Speed.
Input - Fan Speed - Low Speed Switch = is for another speed you would like.
Input - Fan Speed - Switch Off = The script to turn your fan OFF. If you enter in a fan speed script here then the fan will finish with this speed and will stay that way, never turn OFF but it is your call as some people like to do this.
Once you inputs are in (scrips with fan speeds) you then need to enable the fan speed options. If using winter mode then there is a separate option for fan speeds in there to enable as well. If using the low speed input then you also have a time delay you can set. See below.
