Kidde Hardwire Smoke Detector with 9V Battery Backup (6-pack) $45 ( plus more smoke detectors and CO2 detectors on sale @ Home Depot By admin | February 2, 2019 1:57 pm EST 0 Comment https://www.homedepot.com/p/Kidde…/100179554More Stuffhttps://www.homedepot.com/Special…dQ0%3Ay3s0