I have a couple old smoke detectors that are AC powered with battery backup. I replace smoke detectors every 5 to 7 years. The ones I have in place now are rated for 10 years - that's not the concern. As I said, these are older units and may still work. Thinking about using them in the detached garage. However, I'd like an external signal that indicates when there's smoke detected in the garage. Nothing fancy, maybe a siren.
They have black and white wires (110 VAC) and a yellow wire that interconnects to other similar alarms. When one sounds they all sound. I'm wondering what kind of signal they are using to communicate. Anyone have any idea? Somehow this yellow line (have seen other color wires, but the intent is the same), this line signals the other alarms to sound their alert. I'd like to possibly use that signal to trigger an out-door alarm so that if there's smoke in the garage - an alarm will make someone react; possibly call the authorities and alert them.
They have black and white wires (110 VAC) and a yellow wire that interconnects to other similar alarms. When one sounds they all sound. I'm wondering what kind of signal they are using to communicate. Anyone have any idea? Somehow this yellow line (have seen other color wires, but the intent is the same), this line signals the other alarms to sound their alert. I'd like to possibly use that signal to trigger an out-door alarm so that if there's smoke in the garage - an alarm will make someone react; possibly call the authorities and alert them.