I’ve been researching this for quite a while and I can’t find a simple solution, even though it lokos to me like a trivial problem.
I can’t hear the doorbell nowhere outside the house. I get the doorbell button event in HA just fine, so I can use it as I wish. I just miss some sort of device that can ring or play a sound (no video) wherever I place it, even outdoors. I have good wifi coverage and can easily extend zigbee coverage as well. The phone is not an option, as the sound signal is needed by everybody, children included.
Any suggestions that don’t require an electronic engineering degree?