I need some help and please forgive me if this is NOT the correct forum to post this request.
I discovered an old hard-wired security left by previous owner a ELK SS-15 horn type siren in attic. I just checked by connecting it to a 12V supply and it works.
I’d like to use that as my siren for my SmartThings. Here’s my need in more detail below. Wondering if folks can guide me?
- There’s a switch which lights up attic light. I can possibly use that but will need to drop 120V to 12V DC.
- Even if I do it, I’ll still need a way to switch on the 12V DC via SmartThings.
- The horn has 3 wires - Yellow Steady Tone (+), Red Yelp Tone (+), White Common (-).
- Is there a way I can make it work actually like a police type siren? i.e. WOOO–ooo_WOOOO–oooo, etc.
I found this site : http://aeotec.com/support/1219-micro-switch-wiring-schematics.html. Wondering if this would help? But in this case, I don’t think I can opt for point #4 above? What’s actual an yelp tone, btw?
Also - is there any program way to switch on relay for 3 seconds, switch off for 1 sec and switch back on? Then possibly I can achieve my #4 objective?