# How to use Two Humidity sensors in a Flow **URL:** \ **Category:** Questions & Help\ **Tags:** flow\ **Created:** [September 19, 2021, 6:41pm UTC](https://community.homey.app/t/how-to-use-two-humidity-sensors-in-a-flow/51939 "2021-09-19T18:41:02Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Jespertk](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/jespertk/32/36806_2.png) [@Jespertk](https://community.homey.app/u/Jespertk)\ **Post date:** [September 19, 2021, 6:41pm UTC](https://community.homey.app/t/how-to-use-two-humidity-sensors-in-a-flow/51939/1 "2021-09-19T18:41:02Z")
Hi I just got a Homey Pro (erly 2019) Ver: 7.1.3. I have two humidity sensors (two bathrooms) which must control a fan, how do I make a flow for it? Once I have selected one sensor, I cannot select the next one. Is there anyone who can help with that? ---
**Author:** ![Dijker](https://avatars.discourse-cdn.com/v4/letter/d/b9bd4f/32.png) [@Dijker](https://community.homey.app/u/Dijker)\ **Post date:** [September 19, 2021, 7:12pm UTC](https://community.homey.app/t/how-to-use-two-humidity-sensors-in-a-flow/51939/2 "2021-09-19T19:12:54Z")
Welcome to the Community, The topic you posted it in is not for this kind of questions so I moved it to a new Topic. ---
**Author:** ![tlangelaar](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/tlangelaar/32/10980_2.png) [@tlangelaar](https://community.homey.app/u/tlangelaar)\ **Post date:** [September 19, 2021, 8:52pm UTC](https://community.homey.app/t/how-to-use-two-humidity-sensors-in-a-flow/51939/3 "2021-09-19T20:52:17Z")
Can you explain what you want to achieve and when? ---
**Author:** ![Dijker](https://avatars.discourse-cdn.com/v4/letter/d/b9bd4f/32.png) [@Dijker](https://community.homey.app/u/Dijker)\ **Post date:** [September 19, 2021, 9:20pm UTC](https://community.homey.app/t/how-to-use-two-humidity-sensors-in-a-flow/51939/4 "2021-09-19T21:20:54Z")
> [@Jespertk](#): > > Once I have selected one sensor, I cannot select the next one. Hi Jesper, As Tjerk asks, it depends on what you want to achieve, But you could start with a Flow When… . Humidity-Sensor1 Changes… And . Some Logic on \ . AND / OR . Some Logic on \ Then … . Do Something … And then Dupolicate that Flow for When - Humidity-Sensor2 Changes. Pls See [How to use tags in a flow - #8 by Rocodamelshekima](https://community.homey.app/t/how-to-use-tags-in-a-flow/9285/8) ---
**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 19, 2021, 9:47pm UTC](https://community.homey.app/t/how-to-use-two-humidity-sensors-in-a-flow/51939/5 "2021-09-19T21:47:33Z")
Hi Jesper, Things can often be achieved in different ways. So I just wanted to point you to this approach, it might give you new ideas: If you’d want to use the mean average humidity values, you can use the \< group \> app and create a group of those 2 sensors. You can do this by adding a new device, pick the \< group \> app and pick type ‘sensor’; then tick the ‘humidity’ box; then select the two sensors you want. The app calculates the mean average of the 2, without the use of a flow. > The new device (‘2 vochtsensors gemiddeld’ is Dutch for ‘2 hum. sensors average’) > > ![Screenshot_20210919-233726_Homey](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/2/3/2300773b26b896e469daa92f633b0563f6ef284a.jpeg) > By viewing the advanced settings, you’ll see it calculates the ‘mean average’ of the grouped sensors (luchtvochtigheid = Dutch for humidity): > > ![Screenshot_20210919-233430_Homey](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/9/8/9845d467520749ad1a8849b65e64bd229ec237be.jpeg) > Then, you can trigger the flow with the new device, which represents the two sensors: > > ![Screenshot_20210919-233836_Homey](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/e/e/ee0573ff840e643d5d99d669c284e04479096020.jpeg) ---
**Author:** ![Jespertk](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/jespertk/32/36806_2.png) [@Jespertk](https://community.homey.app/u/Jespertk)\ **Post date:** [September 19, 2021, 9:59pm UTC](https://community.homey.app/t/how-to-use-two-humidity-sensors-in-a-flow/51939/6 "2021-09-19T21:59:38Z")
MANY THANKS for the quick response. I’ll probably be asking about more things