# Using Chromecast - Google Speakers - as Siren / Alarm

**URL:** <https://community.homey.app/t/using-chromecast-google-speakers-as-siren-alarm/32187>\
**Category:** Devices\
**Created:** [July 8, 2020, 8:20pm UTC](https://community.homey.app/t/using-chromecast-google-speakers-as-siren-alarm/32187 "2020-07-08T20:20:44Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Xador](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/xador/32/18499_2.png) [@Xador](https://community.homey.app/u/Xador)\
**Post date:** [July 8, 2020, 8:20pm UTC](https://community.homey.app/t/using-chromecast-google-speakers-as-siren-alarm/32187/1 "2020-07-08T20:20:45Z")

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I want to use all of my Google devices including Citation One speakers as alarm devices.

I composed a mp3 with a high pitched alarm sound and uploaded it to Homey (using the web server app), to my AVM FritzBox NAS storage and onto a webpage.

When I generate a flow to cast the file to all of my devices, it takes quite long (app. 45 seconds), until all the speakers are working. The file size is 8 MB.

Do you have any suggestions how I could speed up the process? I am using the Webspace at the moment, which seems to work best. I have a very fast internet connection and a really good WIFI in my home, so that cannot be the problem.

Thanks for your thoughts!!!

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**Author:** ![dof250](https://avatars.discourse-cdn.com/v4/letter/d/7feea3/32.png) [@dof250](https://community.homey.app/u/dof250)\
**Post date:** [July 8, 2020, 8:28pm UTC](https://community.homey.app/t/using-chromecast-google-speakers-as-siren-alarm/32187/2 "2020-07-08T20:28:46Z")

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I think a good start would be to try and compress that file. That 8Mb would be needed to send to the devices before it can be played and that takes time. Try a smaller file

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**Author:** ![Robert\_Zwetsloot](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robert_zwetsloot/32/12399_2.png) [@Robert\_Zwetsloot](https://community.homey.app/u/Robert_Zwetsloot)\
**Post date:** [July 8, 2020, 8:47pm UTC](https://community.homey.app/t/using-chromecast-google-speakers-as-siren-alarm/32187/3 "2020-07-08T20:47:14Z")

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Hi  
please read: [https://homeycornelisse.nl/maak-van-je-google-home-een-sirene/](https://homeycornelisse.nl/maak-van-je-google-home-een-sirene/)  
(via google translate) how to set this up.  
and use his siren\_air\_raid\_synthesized.mp3 (826 kb)

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**Author:** ![Shakesbeard](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/shakesbeard/32/15112_2.png) [@Shakesbeard](https://community.homey.app/u/Shakesbeard)\
**Post date:** [July 8, 2020, 8:50pm UTC](https://community.homey.app/t/using-chromecast-google-speakers-as-siren-alarm/32187/4 "2020-07-08T20:50:53Z")

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**Warning! Advertisement**  
Or try my app and host it on Homey directly 😃

[Micro Web Server App for Homey | Homey](https://homey.app/a/com.sdn.webserver)

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**Author:** ![Xador](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/xador/32/18499_2.png) [@Xador](https://community.homey.app/u/Xador)\
**Post date:** [July 8, 2020, 9:12pm UTC](https://community.homey.app/t/using-chromecast-google-speakers-as-siren-alarm/32187/5 "2020-07-08T21:12:13Z")

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Thank you so much for your fast answers!!!

I got it working now, after compressing my mp3 file, tuning the volume up and using “All Speakers” with Google Home.

It is really scaring even me 😉