# Roller shutter NO Neutral **URL:** \ **Category:** Devices\ **Created:** [August 31, 2024, 1:58pm UTC](https://community.homey.app/t/roller-shutter-no-neutral/115285 "2024-08-31T13:58:45Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![iGiorgis](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/igiorgis/32/130594_2.png) [@iGiorgis](https://community.homey.app/u/iGiorgis)\ **Post date:** [August 31, 2024, 1:58pm UTC](https://community.homey.app/t/roller-shutter-no-neutral/115285/1 "2024-08-31T13:58:45Z")
Hello 😉 In my house at the moment I have three electric shutters whose switches work without Neutral cable. In two of them I found the Neutral blue cable and connected normally with the Fibaro Walli shutter switch BUT one of the three does not have a blue cable in the wall box. đŸ€ đŸ˜”â€đŸ’« What solution is given to me to make it smart and work with homey pro. Any sollution with no neutral cable? Thanks a lot guys. ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [August 31, 2024, 2:01pm UTC](https://community.homey.app/t/roller-shutter-no-neutral/115285/2 "2024-08-31T14:01:15Z")
I’m fairly sure such a device doesn’t exist. ---
**Author:** ![iGiorgis](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/igiorgis/32/130594_2.png) [@iGiorgis](https://community.homey.app/u/iGiorgis)\ **Post date:** [August 31, 2024, 2:17pm UTC](https://community.homey.app/t/roller-shutter-no-neutral/115285/3 "2024-08-31T14:17:35Z")
so all roller shutter switches needs neutral wire ? 😕 ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [August 31, 2024, 5:14pm UTC](https://community.homey.app/t/roller-shutter-no-neutral/115285/4 "2024-08-31T17:14:55Z")
As far as I know, yes. ---
**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:** [September 1, 2024, 11:15am UTC](https://community.homey.app/t/roller-shutter-no-neutral/115285/5 "2024-09-01T11:15:39Z")
There will probably be another color cable which is used as the blue one. So, if you are not sure don’t do it yourself and ask someone who knows more about electricity. ---
**Author:** ![iGiorgis](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/igiorgis/32/130594_2.png) [@iGiorgis](https://community.homey.app/u/iGiorgis)\ **Post date:** [September 7, 2024, 11:49am UTC](https://community.homey.app/t/roller-shutter-no-neutral/115285/6 "2024-09-07T11:49:51Z")
I found a solution from HA community. Can someone help to expain more please? He make it with Shelly 2.5 Post from the user: > I managed to make this work. > So the issue was, that - in the original setup - there is no N in the wall switch, so I cannot put a smart device behind the switch. Rewiring is not an option because I did not want to start such work in the house. > > So here is the solution: > > Original setup > > Wall switch > 3 wires and a switch: incoming L and a 2 way switch that directs this L into 2 cables (let’s call them Lup and Ldn) which go to the shutter housing. So depending on which direction you activate with the switch, L gets connected to Lup or Ldn and goes to the shutter’s input. Note that the wall switch has no N! > > Shutter housing > Incoming N cable and the Lup and Ldn live wires which are coming from the wall switch. And - of course - the shutter motor with inputs for (N, Lup, Ldn). > > “Smart” setup > > Wall switch > The incoming L cable is now connected _directly_ to Lup and besides goes into a momentary switch that - when pressed - connects L to Ldn. In other words: Lup is an L from now on, and Ldn is activated momentary by the switch - when pressed. > > Shutter housing > Lup (which is a constant L from now on) is used to power a Shelly 2.5 in shutter mode. N (which was already in the housing) also powers the Shelly and the shutter’s N. Shelly’s 2 outputs go to the shutter’s Lup and Ldn. Ldn (which now acts as a momentary L) is connected to the Shelly’s SW inputs. > > And that’s it. When you press the wall button it connects L to Ldn, which gives a signal to Shelly’s SW inputs. Every press moves Shelly to the next stage in an up/stop/down/stop rotation. No rewiring and works fine. ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [September 7, 2024, 12:04pm UTC](https://community.homey.app/t/roller-shutter-no-neutral/115285/7 "2024-09-07T12:04:53Z")
> [@iGiorgis](#): > > Can someone help to expain more please? If you need help explaining this (it’s explained quite clearly) you may want to ask someone with more electrical experience to help you out. ---
**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:** [September 7, 2024, 12:46pm UTC](https://community.homey.app/t/roller-shutter-no-neutral/115285/8 "2024-09-07T12:46:44Z")
Couldn’t agree more.