# Stand alone light sensor

**URL:** <https://community.homey.app/t/stand-alone-light-sensor/13612>\
**Category:** Questions & Help\
**Created:** [May 25, 2019, 3:31pm UTC](https://community.homey.app/t/stand-alone-light-sensor/13612 "2019-05-25T15:31:19Z")\
**Posts on this page:** 17\
**Page:** 1

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**Author:** ![Hugo](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/hugo/32/11530_2.png) [@Hugo](https://community.homey.app/u/Hugo)\
**Post date:** [May 25, 2019, 3:31pm UTC](https://community.homey.app/t/stand-alone-light-sensor/13612/1 "2019-05-25T15:31:19Z")

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Hi there,

Who knows a good, stand alone, light sensor.  
I have an io light sensor from Somfy, but Homey can’t read the amount of lux.  
(Although my Tahoma box can!)  
So now i’m searching for a light sensor that gives constant readings instead of, for instance like most sensors that have to be triggerd by motion before they give a reading.

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**Author:** ![Rocodamelshekima](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rocodamelshekima/32/8209_2.png) [@Rocodamelshekima](https://community.homey.app/u/Rocodamelshekima)\
**Post date:** [May 25, 2019, 3:39pm UTC](https://community.homey.app/t/stand-alone-light-sensor/13612/2 "2019-05-25T15:39:27Z")

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An usb powered Aeotec Multisensor 6

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**Author:** ![PetervdK](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/petervdk/32/20669_2.png) [@PetervdK](https://community.homey.app/u/PetervdK)\
**Post date:** [May 25, 2019, 9:07pm UTC](https://community.homey.app/t/stand-alone-light-sensor/13612/3 "2019-05-25T21:07:19Z")

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> [@Hugo](#):
>
> like most sensors that have to be triggered by motion before they give a reading.

Not entirely true, since the majority report their values at 3 moments:

1. If the specified change threshold for a value is met
2. if the specified standard report interval has past
3. if an alarm (motion, tamper) has been triggered (but that is not standard for all devices)

But if you indeed want real realtime measurements, then the multi 6 would be the best choice, just like @Rocodamelshekima says.

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**Author:** ![Frits](https://avatars.discourse-cdn.com/v4/letter/f/85f322/32.png) [@Frits](https://community.homey.app/u/Frits)\
**Post date:** [May 25, 2019, 9:20pm UTC](https://community.homey.app/t/stand-alone-light-sensor/13612/4 "2019-05-25T21:20:23Z")

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Or the aeotec trisensor. Which has movement, lux and temperature. All three independent from each other.

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**Author:** ![FKey](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/fkey/32/14793_2.png) [@FKey](https://community.homey.app/u/FKey)\
**Post date:** [May 26, 2019, 5:03am UTC](https://community.homey.app/t/stand-alone-light-sensor/13612/5 "2019-05-26T05:03:45Z")

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The hue motion sensors  
(They also have one for outside now)  
For these you can set the report interval via homey in the device settings. (One of the options @PetervdK me tioned)

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**Author:** ![Hugo](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/hugo/32/11530_2.png) [@Hugo](https://community.homey.app/u/Hugo)\
**Post date:** [May 26, 2019, 7:43am UTC](https://community.homey.app/t/stand-alone-light-sensor/13612/6 "2019-05-26T07:43:02Z")

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Thanks.  
This really helps.

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**Author:** ![PetervdK](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/petervdk/32/20669_2.png) [@PetervdK](https://community.homey.app/u/PetervdK)\
**Post date:** [May 26, 2019, 8:10am UTC](https://community.homey.app/t/stand-alone-light-sensor/13612/7 "2019-05-26T08:10:01Z")

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Are you sure the outdoor really reports LUX values? I do understand it uses it for determining the day/night status, but does it separately report it as a value?

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**Author:** ![Hugo](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/hugo/32/11530_2.png) [@Hugo](https://community.homey.app/u/Hugo)\
**Post date:** [May 26, 2019, 11:01am UTC](https://community.homey.app/t/stand-alone-light-sensor/13612/8 "2019-05-26T11:01:27Z")

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I ordered one.  
So, we’ll find out!

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**Author:** ![Rocodamelshekima](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rocodamelshekima/32/8209_2.png) [@Rocodamelshekima](https://community.homey.app/u/Rocodamelshekima)\
**Post date:** [May 26, 2019, 12:38pm UTC](https://community.homey.app/t/stand-alone-light-sensor/13612/9 "2019-05-26T12:38:27Z")

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> [@Hugo](#):
>
> I ordered one

Which one??  
Ow ,wait. The Hue aye?

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**Author:** ![rindler](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rindler/32/5501_2.png) [@rindler](https://community.homey.app/u/rindler)\
**Post date:** [May 26, 2019, 5:59pm UTC](https://community.homey.app/t/stand-alone-light-sensor/13612/10 "2019-05-26T17:59:22Z")

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It does.

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**Author:** ![FKey](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/fkey/32/14793_2.png) [@FKey](https://community.homey.app/u/FKey)\
**Post date:** [May 26, 2019, 6:14pm UTC](https://community.homey.app/t/stand-alone-light-sensor/13612/11 "2019-05-26T18:14:07Z")

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> [@PetervdK](#):
>
> Are you sure the outdoor really reports LUX values?

I do not have an outdoor sensor, so not 100% sure.  
But another post in this forum status its available:

> [@Philips Hue outdoor sensor](https://community.homey.app/t/philips-hue-outdoor-sensor/9804/13):
>
> Sorry, dan begreep ik je inderdaad verkeerd. Sinds vandaag kun he de motion sensor data ook in Homey gebruiken, met de beta-versie van de Hue app (v 3.0.11). Je kunt bewegingsmelding, lichtsterkte, temperatuur en battery uitlezen in Homey.

I do have the hue indoor motion sensors, they nicely trigger on lux only.

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**Author:** ![PhilS](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/phils/32/12941_2.png) [@PhilS](https://community.homey.app/u/PhilS)\
**Post date:** [May 26, 2019, 8:13pm UTC](https://community.homey.app/t/stand-alone-light-sensor/13612/12 "2019-05-26T20:13:56Z")

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I have a hue outdoor motion sensor and it really reports lux values. I can confirm 😏

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**Author:** ![Hugo](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/hugo/32/11530_2.png) [@Hugo](https://community.homey.app/u/Hugo)\
**Post date:** [May 28, 2019, 5:01pm UTC](https://community.homey.app/t/stand-alone-light-sensor/13612/13 "2019-05-28T17:01:26Z")

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I got it today .  
But, after it is added in my Homey i get readings ones.  
The sensor lights up every now and then, but nothing happens.  
No triggers after adding.  
☹

Edit: after several deinstallations and reinstallations it works.  
But, after hanging it outside above my backdoor my Homey sometimes can’t reach the sensor anymore.  
If this happens then after some time (hours mostly) suddenly Homey sees my sensor again.  
Is this the already known Zigbee problem, although the sensor works with another app?

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<div class="post-metadata">

**Author:** ![Hugo](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/hugo/32/11530_2.png) [@Hugo](https://community.homey.app/u/Hugo)\
**Post date:** [June 7, 2019, 3:15pm UTC](https://community.homey.app/t/stand-alone-light-sensor/13612/14 "2019-06-07T15:15:09Z")

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Extra:

It seems that after a while without changes (no temperature or light differences or movement) Homey doesn’t see the outdoor sensor anymore.  
After 3 days experimenting I bought a second one from another seller and this one also disconnects from Homey.  
Even putting the sensor next to Homey after installation  
Homey does not see the sensor after a some time in the dark.

Any suggestions?

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**Author:** ![FKey](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/fkey/32/14793_2.png) [@FKey](https://community.homey.app/u/FKey)\
**Post date:** [June 7, 2019, 6:51pm UTC](https://community.homey.app/t/stand-alone-light-sensor/13612/15 "2019-06-07T18:51:33Z")

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I am a little confused by your posts:

> [@Hugo](#):
>
> Is this the already known Zigbee problem

Problem is with the homey native hue app, so sensor not connected to hue bridge

> [@Hugo](#):
>
> although the sensor works with another app?

Other app? Do you refer to the app that uses the hue bridge?

> [@Hugo](#):
>
> Even putting the sensor next to Homey after installation

This would only be usefull when the sensor is not connected via the bridge, but directly to homey

So canyou clarify:  
How did you connect the sensor?  
Directly to homey? Or via the Hue?

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<div class="post-metadata">

**Author:** ![rindler](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rindler/32/5501_2.png) [@rindler](https://community.homey.app/u/rindler)\
**Post date:** [June 7, 2019, 7:24pm UTC](https://community.homey.app/t/stand-alone-light-sensor/13612/16 "2019-06-07T19:24:05Z")

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The issue with the sensor connected directly to Hue won’t be fixed until zigbee rewrite, see [https://github.com/sebbebebbe/com.philips.hue.zigbee/issues/95#issuecomment-499959432](https://github.com/sebbebebbe/com.philips.hue.zigbee/issues/95#issuecomment-499959432)

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<div class="post-metadata">

**Author:** ![Hugo](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/hugo/32/11530_2.png) [@Hugo](https://community.homey.app/u/Hugo)\
**Post date:** [June 8, 2019, 6:21am UTC](https://community.homey.app/t/stand-alone-light-sensor/13612/17 "2019-06-08T06:21:10Z")

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Hello FKey,  
Yes, i connected my sensors direct to Homey.  
With the ‘other app’ I meant an app from the Homey store.  
Because Homey itself didn’t know the sensor.
