photoelectric smoke alarm

Your Smoke Detector Is Lying to You — Here’s the Truth

· July 1, 2026
Your Smoke Detector Is Lying to You — Here's the Truth

Forty percent output — that’s what my handheld light meter registered when I aimed it into the optical chamber of a hallway smoke detector I’d just pulled down off its bracket. I was at a house in the suburbs on what should’ve been a routine ductwork check, up in the attic, when the homeowner mentioned … Read more

Photoelectric vs Dual Sensor: Which Smoke Detector Saves Lives

· June 22, 2026
Photoelectric vs Dual Sensor: Which Smoke Detector Saves Lives

Thirty minutes — that’s how much longer a smoke alarm relying only on ionization sensing can take to sound compared to a photoelectric unit when a fire is smoldering rather than flaming. In a house full of sleeping people, that gap is the difference between waking up and not waking up. I thought about that … Read more