Home Sensors, Alarms & Leak Detection

Find the best carbon monoxide alarm for the home. Compare battery, plug-in, and backup models from Kidde and First Alert, then check prices.

CO alarm placement near a boiler matters. Compare 5 battery and plug-in CO detectors for boiler rooms, garages and utility spaces. Check prices on Amazon.

First Alert SMI100-AC review: a hardwired smoke alarm with 9V battery backup. See who it suits, how it installs, and where it falls short.

The best combined smoke and CO alarm for every home and budget. Compare hardwired, battery and sealed 10-year picks, then check prices on Amazon.

X-Sense SC07 review: a sealed-battery 2-in-1 smoke and carbon monoxide detector with LCD display. See who it suits and check the price on Amazon.

Compare the best ten year sealed battery alarms for smoke and CO protection. Find the right pick for hardwired homes, rentals, and budget buyers. See prices on Amazon.

Compare the best smart smoke alarm with phone alerts — budget, hardwired, and Matter picks — and get instant warnings wherever you are.

X-Sense SC07 vs Siterlink GS509A compared: sealed 10-year combo units against a replaceable-battery 8-pack. See which smoke alarm fits the home.

Need an alarm testing and maintenance schedule? Compare 5 fire and smoke alarm log books for landlords, facilities teams, and inspectors.

The Kidde 20SD10 is a sealed-battery smoke alarm with a 10-year lifespan and an 85 dB horn. See who it fits, where it falls short, and check the price.