Add Yahoo as a preferred source to see more of our stories on Google. Properly installed smoke detectors are often the first line of defense against a house fire, keeping the homeowner informed and ...

The control panel will provide “trouble” signals to the building operators if a field wiring circuit has: (a) an open circuit, (b) a grounded circuit, (c) a short circuit, or (d) a smoke detector head ...

When you buy through our links, Business Insider may earn an affiliate commission. Learn more The best smoke detectors are a necessity for every home, quickly detecting fire, smoke, and carbon ...