Yes, it is alright. Since you were considering connecting Shelly to 230V, you will get 230V on the button, which is dangerous !!!
Use only safe voltage.
In the picture you have the wrong marking 230V AC + -.
Correctly, L and N.
If a second transformer was added to the 220v AC to convert to 12v DC and this was used to power the shelly. Everything else would remain the same wouldn’t it?
Yes, that’d be as safe as your 12V transformer — although all this running off DC is not making use of one of the key benefits of the Shelly, a mains-power-capable ESP device in a tiny box.
If you were that way inclined, you could replace it with a generic 5V-capable ESP device (e.g. D1 Mini) and a relay and run it off an old USB phone charger. That’d give you more flexibility, inputs and outputs etc.
I started with a ESP-01 but due to the power problems hoped the Shelly would work, I’d assume I’d need use a 5v transformer in that case, as I don’t have a power socket near the door chime box. Thanks
@time, @Troon thanks for the pictures and comments 
I have updated the picture in the OP to make the connection to the transformer more clear.
I also noticed the same issue that the automation was not triggered on a very short press when the trigger in the automation is set on the entity for the shelly switch. This is solved by using MQTT, I use the automation below.
It will only trigger if the previous trigger was more than 5 seconds ago.
alias: Doorbell push notifcation
description: ''
trigger:
- platform: mqtt
topic: shellies/doorbell/input/0
payload: '1'
condition:
- condition: template
value_template: >-
{{ (as_timestamp(now()) -
as_timestamp(states.automation.doorbell_notification.attributes.last_triggered
| default(0)) | int > 5)}}
action:
- choose:
- conditions:
- condition: state
entity_id: switch.doorbell_chime
state: 'off'
sequence:
- service: notify.notify
data:
message: Someone at the door (chime off)
title: Doorbell
data:
ttl: 0
priority: high
color: red
default:
- service: notify.notify
data:
message: Someone at the door (chime on)
title: Doorbell
data:
ttl: 0
priority: high
color: green
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Hey guys! I have an Bticino Linea 2000 + Bticino Pivot Video.
I have found this two guides on how to install them:
Sadly, I can’t figure out how to install a shelly on them.
I’ve came up with the following, but have no idea if this is okay… My transfo is 12v, so I think that’s okay to power the shelly?
Thanks for sharing this. If you have MQTT enabled than this is an easier solution than the one I use with an external PHP page which calls the HA API. So I have switched to the MQTT solution 
I have added your post to the OP.
The connection is bad. Take a look at the pictures I inserted above.
1 - transformer 230V AC / 12V AC will not work (Shelly 12V DC or 24-60V DC)
You must use a 230V AC / 12V DC power supply for Shelly
2 - Shelly (0 - I)is only a switch and in your connection you have brought one transformer wire to the bell and the same wire to the bell via the Shelly contact
Thanks for your answer! With your comment in mind and reading more, I have come to this setup:
Do not attempt to connect without electrical knowledge as this can never work.
You are trying to connect an intercom and this thread is about connecting a normal doorbell that rings when voltage is applied.
What do you want your home phone to do?
Thank you for inspiring me to do this… I had on my hand 14V AC powered doorbell, that made it more easy for me.
Here is my outtake:
Hi,
How exactly do i silent the chime at a certain time? Or in my case, when my kids bedroom door is closed.
I can’t figure it out in automations…
Thanks
See first post
switch:
- platform: rest
name: shelly_doorbell_chime_status
resource: http://192.168.1.187/settings/relay/0
body_on: 'btn_type=toggle'
body_off: 'btn_type=detached'
is_on_template: '{{ value_json.btn_type == "toggle" }}'
And then switch.turn_off or on this switch
I don’t see this “switch” in my entities after adding it to my config.yaml
Restarted HA? Error in the log? IP adjusted to yours? Shelly PW protected?
Got it working, my Shelly interface was protected with a password.
switch:
- platform: rest
name: shelly_doorbell_chime_status
resource: http://192.168.1.187/settings/relay/0
body_on: 'btn_type=toggle'
body_off: 'btn_type=detached'
is_on_template: '{{ value_json.btn_type == "toggle" }}'
username:
password:
Okay. I Sorted it out. I was using the standard Shelly integration. I have now changed all the “time essential” shellies over to MQTT, and there is now very little latency. I’m a happy man!
1 Like
Hi all,
I’ve been trying to replicate this with my home doorbell but I’m not having much luck.
A couple of questions:
I’m using a 12v DC light supply I got from Screwfix The shelly seems to come up fine with and I can access the web UI, but I don’t seem to be receiving any power at the button when I test with my multi meter.
I’m wondering if this is an issue with the power supply or my existing door bell button?
My current doorbell button is an old style illuminated one with a bulb the shape of a fuse (something like this with a bulb similar to this).
Would you expect this button/bulb combo to work with 12v DC?
Finally, I can ring the chime from the shelly web ui but I need to turn it on for the ding then off for the dong - is that to be expected?
Below is how I’ve got it wired
Many thanks!
Got it sorted in the end. The problem was the bulb in the switch. After removing it, everything works as expected!