# Shelly Dimmer 2 on three way switch **URL:** \ **Category:** Questions & Help\ **Created:** [January 25, 2021, 9:51am UTC](https://community.homey.app/t/shelly-dimmer-2-on-three-way-switch/41742 "2021-01-25T09:51:44Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Joram](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/joram/32/33016_2.png) [@Joram](https://community.homey.app/u/Joram)\ **Post date:** [January 25, 2021, 9:51am UTC](https://community.homey.app/t/shelly-dimmer-2-on-three-way-switch/41742/1 "2021-01-25T09:51:44Z")
I installed a Shelly dimmer in a 3 way switch system, like this: ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/9/0/9071a85cf027517352d591b7a1922f848e7a48e5.png) I installed it in this way: ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/4/7/475c7916eddeca2dc5d8532cbd83ae20359a90df.jpeg) Obviously this is not correct and it does not work. I am not sure how to do it correctly. Can anyone give me a hint? ---
**Author:** ![Martijn\_Hoogenbosch](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/martijn_hoogenbosch/32/10647_2.png) [@Martijn\_Hoogenbosch](https://community.homey.app/u/Martijn_Hoogenbosch)\ **Post date:** [January 25, 2021, 9:58am UTC](https://community.homey.app/t/shelly-dimmer-2-on-three-way-switch/41742/2 "2021-01-25T09:58:00Z")
The Dimmer2 works exactly as the Dimmer1 in regards to the wiring scheme, so please have a look at: [https://www.shelly-support.eu/index.php?attachment/12835-ar768-kreuzschaltung-png/](https://www.shelly-support.eu/index.php?attachment/12835-ar768-kreuzschaltung-png/) ← three way switch [https://www.shelly-support.eu/lexikon/index.php?entry/113-connection-diagrams-shelly-dimmer/](https://www.shelly-support.eu/lexikon/index.php?entry/113-connection-diagrams-shelly-dimmer/) for more wiring diagrams. * * * Now I needed these diagrams, but they’re not avail anymore on above links: [https://www.shelly-support.eu/index.php?article/46-shelly-dimmer/](https://www.shelly-support.eu/index.php?article/46-shelly-dimmer/) is the new one for the Dimmers ---
**Author:** ![Joram](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/joram/32/33016_2.png) [@Joram](https://community.homey.app/u/Joram)\ **Post date:** [January 25, 2021, 10:31am UTC](https://community.homey.app/t/shelly-dimmer-2-on-three-way-switch/41742/3 "2021-01-25T10:31:48Z")
Oh nice, thanks! I didn’t find this one before. I have 2 doubts/questions: - It seems I keep the wiring exactly like it was originally. In the picture you send the middle switch looks a bit different wired, but I guess it’s still the same. - I have connected my other (simple) switches with the Shelly dimmer 2 on I1 and I2, using the edge switch option. If I only use I1, does that still work with switching on and off? ---
**Author:** ![Martijn\_Hoogenbosch](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/martijn_hoogenbosch/32/10647_2.png) [@Martijn\_Hoogenbosch](https://community.homey.app/u/Martijn_Hoogenbosch)\ **Post date:** [January 25, 2021, 10:50am UTC](https://community.homey.app/t/shelly-dimmer-2-on-three-way-switch/41742/4 "2021-01-25T10:50:07Z")
With simple switches you mean toggle switches, right? I never installed a 3way switch tbh, I did install a 2 way switch with toggle switches on basically the same way and that worked. ---
**Author:** ![Joram](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/joram/32/33016_2.png) [@Joram](https://community.homey.app/u/Joram)\ **Post date:** [January 25, 2021, 11:25am UTC](https://community.homey.app/t/shelly-dimmer-2-on-three-way-switch/41742/5 "2021-01-25T11:25:22Z")
Yes my simple switches I mean the two-switched you find in most homes. ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/5/2/52952eb875b8a6b0a9e86cb168738a10bc6138da.jpeg) So that’s good news that it should work with only I1. Do you have it set to ‘edge switch’? ---
**Author:** ![Martijn\_Hoogenbosch](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/martijn_hoogenbosch/32/10647_2.png) [@Martijn\_Hoogenbosch](https://community.homey.app/u/Martijn_Hoogenbosch)\ **Post date:** [January 25, 2021, 11:26am UTC](https://community.homey.app/t/shelly-dimmer-2-on-three-way-switch/41742/6 "2021-01-25T11:26:01Z")
Ye, that’s called a '‘toggle’ switch in English. And yes, I did have it set to Edge switch, but now I have replaced them all with momentary switches, which I like much more. ---
**Author:** ![Joram](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/joram/32/33016_2.png) [@Joram](https://community.homey.app/u/Joram)\ **Post date:** [January 25, 2021, 11:50am UTC](https://community.homey.app/t/shelly-dimmer-2-on-three-way-switch/41742/7 "2021-01-25T11:50:21Z")
I just tested it and it’s working. Thanks! Now I wonder why I used both inputs in the other Shelly dimmer/switch combinations I have in my house.