Turn on lights based on Lux sensor Shelly DW2

Peekie

Hi,

I'm a happy user of the Shelly products, which I mainly use to control the lights in my house.

I've set time schedules in the relays to turn on the lights based on sunset times.

But there are days that I would like to turn on the lights earlier because it is darker due to cloudy weather conditions.

So, I bought the Shelly door window sensor v2, since it has a lux sensor. I noticed that the DW2 goes into deep sleep after a while. Will the sensor still measure the lux values? And will it be able to trigger a scene based on the lux values?

Thanks for your help!

MIHO

Welcome to the forum. ?

Yes you can define values under Sensor Settings-> Illumination Definition. The best way to set it is via WebUi.

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There you can set the brightness from which it is dusk or dark.

With these values you can either use scenes in the app, or directly via actions to give commands for your light control.

Peekie

Thank you for your warm welcome and reply to my question.

I found the settings for Illumination Definition. And also managed to setup a scene. I did it through the app since the webui seems unreachable when the DW2 is in deepsleep modus.

I will experiment with the illumination levels to get it the way I would like to.

Can you tell me how often the DW2 is measuring the illumination levels? In the log I see hourly levels. Does this also mean it measures every hour? Or more frequently?

MIHO

To make the settings via the webUi, wake up the DW2 via the button It is located in the small hole on the front of the housing.

The DW2 wakes up automatically:

Changes Reed contact, open and closed
For temperature changes as set in Thresshold.
If the light values exceed or fall below the set light values in Illumination Definition. (But here you have to test what is best for you)
Vibrationen detection

If nothing changes at these values, the Shelly remains in deep sleep to save battery power.

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Peekie

Thank you for this clear explanation of how DW2 functions. I could not find this information.

I am going to test which illumination levels work best in my situation.