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Is there a way to wire a relay for doorbell #1, relay for #2, and outdoor switch for both?
(lemmy.world)
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?
/edit; ah shit...AC. Not DC.
For AC: use a single-throw dual-pole switch (a switch/button that closes two seprate circuits with one action). (S2 in this diagram)
For DC: You can use two diodes.
Switch1 triggers Coil1, S2 triggers C2, S3 triggers both.
I used coils for traditional bell relays, but any load will do.
Fun to see the DC solution though, thanks.