I have a HomeKit security system in my house (home) and I wonder what is the best way to secure my detached garage. I’m not sure I want the police called if there’s an intruder, but I think I’d like a siren to go out there. The plan is to put a camera and a siren, but I’m not sure how I should connect them. I make the camera’s motion detector trigger my home system or receive a separate local garage system. I wonder if others have created something similar and what the possibilities are.