# Looking for a DRY contact ON/OFF reader

**URL:** <https://community.homey.app/t/looking-for-a-dry-contact-on-off-reader/149382>\
**Category:** Devices\
**Created:** [January 16, 2026, 9:53am UTC](https://community.homey.app/t/looking-for-a-dry-contact-on-off-reader/149382 "2026-01-16T09:53:12Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Luca\_Bartoletti](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/luca_bartoletti/32/151973_2.png) [@Luca\_Bartoletti](https://community.homey.app/u/Luca_Bartoletti)\
**Post date:** [January 16, 2026, 9:53am UTC](https://community.homey.app/t/looking-for-a-dry-contact-on-off-reader/149382/1 "2026-01-16T09:53:12Z")

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Hi,

I have a DRY Contact in my windows that can be used to know if the windows are open or closed. The window has a 220V (I’m in EU) connection nearby and the cables coming from the DRY Contact.

I thought that the Aqara T2 could be right for this, but turns out it doesn’t.

I need something that allows me to read the open/closed state in Homey. What can I adopt for this use case?

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**Author:** ![Peter\_Kawa](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/peter_kawa/32/173848_2.png) [@Peter\_Kawa](https://community.homey.app/u/Peter_Kawa)\
**Post date:** [January 16, 2026, 2:13pm UTC](https://community.homey.app/t/looking-for-a-dry-contact-on-off-reader/149382/2 "2026-01-16T14:13:35Z")

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Hello Luca, and welcome.

The simplest fix will be an (Aqara) water flood sensor.

> [@Connect a waterflow sensor to Homey](https://community.homey.app/t/connect-a-waterflow-sensor-to-homey/138270/2):
>
> Consider using a flood sensor. Aqara models have 2 screws which send a signal when submerged in water.  
> This also works when you shortcut them by a wire connected to the dry contact.
> 
> ![17501083495807282814768823964300](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/a/7/a79f360ba28705eeab59d388489773dcacee1fe5.jpeg)

.

Second, a Shelly Uni can do the job as well. It’s way smaller, but needs external power.  
It has two configurable inputs you can use.  
[https://shelly.digital/product/shelly-uni/](https://shelly.digital/product/shelly-uni/)