# Relay device help

**URL:** <https://community.homey.app/t/relay-device-help/31134>\
**Category:** Devices\
**Created:** [June 11, 2020, 8:44am UTC](https://community.homey.app/t/relay-device-help/31134 "2020-06-11T08:44:07Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![vaderag](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/vaderag/32/150_2.png) [@vaderag](https://community.homey.app/u/vaderag)\
**Post date:** [June 11, 2020, 8:44am UTC](https://community.homey.app/t/relay-device-help/31134/1 "2020-06-11T08:44:08Z")

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I’m looking for a relay type device which controls two circuits, but _completely_ independently from a single switch - does anyone know of such a thing?

Use case: I have two lighting circuits which are on different RCDs but in actually in the same room (the landing) due to extension

I want to combine the two switches for these circuits into a single switch on the plate

It could be done ‘virtually’ by wiring say a Shelly 1 into each switch and setting a flow when one comes on to switch the other, or _possibly_ with a Fibaro relay on each and setting association (i think??) but what I was really hoping for is something _like_ a shelly one, with the switch input that when it switches joins _two_ circuits, but independently

Does such a thing exist?