I use the frigate plugin in home assistant to make my lights do certain things when persons are detected where they shouldn’t be. Once you’ve got frigate connected to home assistant, your possibilities are endless. With a few zigbee smart switches, you could start pulling off home alone style antics if you really wanted. Think: sprinklers, lights, noises, projectors, video, etc… just dont forget to keep the legal aspect in mind.

I also have home assistant play a sort of alarm on my denon home theater stereo if a person is detected in frigate. It gets very loud.

I haven’t heard of alarmo. It sounds like it fits my use case perfectly. Checking it out.