# Heimdall - Let Homey watch over your home

**URL:** <https://community.homey.app/t/heimdall-let-homey-watch-over-your-home/134>\
**Category:** Apps\
**Tags:** app, official, security, homey-pro:mini:shs, heimdall\
**Created:** [August 22, 2018, 1:41pm UTC](https://community.homey.app/t/heimdall-let-homey-watch-over-your-home/134 "2018-08-22T13:41:20Z")\
**Posts on this page:** 1\
**Showing post:** 32

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**Author:** ![stepic7](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/stepic7/32/18659_2.png) [@stepic7](https://community.homey.app/u/stepic7)\
**Post date:** [October 18, 2018, 2:17pm UTC](https://community.homey.app/t/heimdall-let-homey-watch-over-your-home/134/32 "2018-10-18T14:17:43Z")

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On trying to implement Heimdall  
I recently raised a question on the possibility that Heimdall acknowledges the status of doors/windows whether opened/closed  
Each door/window status is detected by a switch (an input to a Fibaro generic input sensor)  
However each switch cannot be acknowledged since it does not have the “capability alarm\_contact” in order to be detected by Heimdall  
So as you suggested I have created Virtual devices to account for an “alarm feature”  
However no one is detected by Heimdall once giving the definition as the only possible feature available, i.e. “motion detection” which therefore does not work either

I think this depends on the fact that “motion detection” is a transient event while the CONTACT detection is a STATUS EVENT

> [@Create Virtual device with capability "alarm\_contact"](https://community.homey.app/t/create-virtual-device-with-capability-alarm-contact/1517):
>
> I need to add a Virtual device with capability alarm\_contact in order to be detected by Heimdall to emulate an ON/OFF switch I tried several no one is acknowledged but in the case the device is Motion detection Use of this device is to pass to Heimdall the info of an Open/Close switch implemented by a flow with the Fibaro binary sensor as explained in the thread: Can anybody help?

Do you think is there any possibility to take care of this issue?

in the meantime I have also submitted a question to Arjan in github

> <https://github.com/ArjanKranenburg/virtual-devices/issues/67>
>
> Hello Arjan
> I would like to use Heimdall to control the status of doors (open/c…losed)
> Each door status is acknowledged by a switch (an input to a Fibaro generic input sensor)
> Each switch cannot be acknowledged since it does not have the "capability alarm\_contact" in order to be detected by Heimdall
> So as suggested by DaneedeKruyff I have created Virtual devices to account for an "alarm feature"
> However no one is detected by Heimdall since ALSO the VD do not have the "alarm feature"
> I tried defining the VD with the "motion detection" feature but it does not work as well
> I think this depends on the fact that "motion detection" is a transient event while the CONTACT detection is a STATUS EVENT
> I wonder this could be accounted for in the definition of a VD
> thanks a lot
> Stefano

to understand whether a VD can be implemented with the “capability alarm\_contact”

thanks

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