Using a shelly in a digital chime box to smarten up an old doorbell : r/homeassistant,Spectrum Holly green 1111,Shelly 3EM - Shelly UK,Shelly PM Mini Gen3 | WiFi & Bluetooth Smart Power Meter 1 Channel 16 A | Home Automation | Compatible with Alexa & Google Home | iOS Android App | No Hub,ZEM5305 - Opal Kelly