# Shelly plus 1 wiring doorbell

**URL:** <https://community.homey.app/t/shelly-plus-1-wiring-doorbell/88424>\
**Category:** Devices\
**Created:** [August 30, 2023, 9:46pm UTC](https://community.homey.app/t/shelly-plus-1-wiring-doorbell/88424 "2023-08-30T21:46:24Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Jan\_Oivind\_Holgersen](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/jan_oivind_holgersen/32/47639_2.png) [@Jan\_Oivind\_Holgersen](https://community.homey.app/u/Jan_Oivind_Holgersen)\
**Post date:** [August 30, 2023, 9:46pm UTC](https://community.homey.app/t/shelly-plus-1-wiring-doorbell/88424/1 "2023-08-30T21:46:24Z")

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Can someone help me wiring this correct? The bell button outside is connect to I and O. When I search for devices in shelly app, just pending connection.

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**Author:** ![Mike1233](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/mike1233/32/20991_2.png) [@Mike1233](https://community.homey.app/u/Mike1233)\
**Post date:** [August 30, 2023, 10:15pm UTC](https://community.homey.app/t/shelly-plus-1-wiring-doorbell/88424/2 "2023-08-30T22:15:46Z")

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Did you first checked the manual of the Shelly device?  
First there is no cable on the N. Neutral. But if you use 12V or 24 - 60V DC then it must be the +.

 ![SmartSelect_20230831_000931_Foxit PDF Editor](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/e/1/e1f9c33b78007f37037f897b3bab2e716df289e4.jpeg)

Maybe you can show on the picture what is power, button and the doorbel.

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<div class="post-metadata">

**Author:** ![OH2TH](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/oh2th/32/111414_2.png) [@OH2TH](https://community.homey.app/u/OH2TH)\
**Post date:** [August 31, 2023, 4:13am UTC](https://community.homey.app/t/shelly-plus-1-wiring-doorbell/88424/3 "2023-08-31T04:13:33Z")

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Manual for connecting the doorbell.

> **[QSG-D3230.pdf](https://livewell.honeywellhome.com/honeywell_wp/wp-content/uploads/QSG-D3230.pdf)**
>
> 598.96 KB

 ![Screenshot 2023-08-31 at 6.50.18](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/2/d/2d98149e57f39c3410b21a1a3ce4c1b3d3c34dc4.png)

Not knowing what you are trying to accomplish, it is hard to help you.

One thing I notice, that you are trying to use the doorbell transformer’s low voltage 8 Vac to power the Shelly. That won’t work, since Shelly Plus 1 only supports 12Vdc, DC 24-48Vdc or 110-240Vac.

You have also practically shorted the “ground” (`L`) to the SW input of the Shelly, meaning that the Shelly switch input is always on.

Shelly `I` and `O` are the relay output, not the switch input.

And one more thing there is no jumpers to set in this Shelly model.

> **[Shelly Plus 1](https://kb.shelly.cloud/knowledge-base/shelly-plus-1)**
>
> Shelly Plus 1 is a small form factor smart switch with potential-free contacts, which allows remote control of electric appliances through a mobile phone, tablet, PC, or home automation system.

And as the manual for the doorbell says, ask a qualified electrician to connect it.