My house was previously multiple units, and has nice sounding chime doorbell for two floors. I’ve set up a relay board so family members can ring one or the other bell from HomeAssistant. If someone comes to the front door, I’d like them to press a button to ring both.
Obviously I can use a smart button and a simple automation to trigger two relays. But is there some way I’m overlooking to have a dumb, standard wired doorbell button that will ring both chimes without causing either relay to also ring both?
Maybe there’s a DPST weatherproof push button out there that would look nice on the wall?
The “dumb” but reliable way would be to install 2 wires from your outdoor button to the trigger side of both relays. There are mechanical buttons that can close 2 circuits at once (I don’t know the proper English term).
DPST (double-pole, single-throw)