Intercom Buzzer wiring with Shelly Plus 1

Looking to make apartment door buzzer smart : r/HomeKit

Connecting My Doorbell to the Internet: The How and Why

Help: Door buzzer & Opener · Issue #1151 · mongoose-os-apps/shelly-homekit · GitHub

Doorbell button > Shelly Uni config - Configuration - Home Assistant Community

Shelly 1 intercom - Configuration - Home Assistant Community

Make a dumb doorbell smart with Shelly 1 - #120 by jmnrutten - Share your Projects! - Home Assistant Community

Wiring Shelly Plus 1 with Rob Tait

Intercom Buzzer wiring with Shelly Plus 1

shelly how to wire it

Connecting an Apartment Door Buzzer to a Smarthome Hub, by Chris Whong