# Alarm On/Off build flow, how to?

**URL:** <https://community.homey.app/t/alarm-on-off-build-flow-how-to/145319>\
**Category:** Questions & Help\
**Created:** [November 14, 2025, 9:01am UTC](https://community.homey.app/t/alarm-on-off-build-flow-how-to/145319 "2025-11-14T09:01:48Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Ganescha](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/ganescha/32/123104_2.png) [@Ganescha](https://community.homey.app/u/Ganescha)\
**Post date:** [November 14, 2025, 9:01am UTC](https://community.homey.app/t/alarm-on-off-build-flow-how-to/145319/1 "2025-11-14T09:01:48Z")

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Hi,

I have some Ikea door sensors and a Siren connected together and use it as an alarm system. Works great. But I want a button to turn the flows off temporarily and back on. I made a virtual device, mode. I made a flow that turned off one a sensor by punching the VD, but it doesn’t turn it back on when I push it again back on. Do I need one button for off and one for On?

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**Author:** ![Wim\_Post](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/wim_post/32/56793_2.png) [@Wim\_Post](https://community.homey.app/u/Wim_Post)\
**Post date:** [November 14, 2025, 9:30am UTC](https://community.homey.app/t/alarm-on-off-build-flow-how-to/145319/2 "2025-11-14T09:30:43Z")

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I would call the VD-button ‘Alarm on’ and make the alarmflow something like this:

WHEN

one of the doorsensors turned on

AND

VD-button ‘alarm on’ is on

THEN

sound alarm by siren

So nothing happens when the VD-button is turned off

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**Author:** ![DaneedeKruyff](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/daneedekruyff/32/964_2.png) [@DaneedeKruyff](https://community.homey.app/u/DaneedeKruyff)\
**Post date:** [November 14, 2025, 9:44am UTC](https://community.homey.app/t/alarm-on-off-build-flow-how-to/145319/3 "2025-11-14T09:44:56Z")

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‘There’s an app for that’: [Heimdall - Let Homey watch over your home](https://community.homey.app/t/heimdall-let-homey-watch-over-your-home/134)

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<div class="post-metadata">

**Author:** ![Ganescha](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/ganescha/32/123104_2.png) [@Ganescha](https://community.homey.app/u/Ganescha)\
**Post date:** [November 14, 2025, 11:29am UTC](https://community.homey.app/t/alarm-on-off-build-flow-how-to/145319/4 "2025-11-14T11:29:03Z")

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Oh, nice! Im gonna try the APP, Thanks. 🙏