Best Hard Wired Smoke Alarm Beeping

First Alert PR700A Slim Series Battery Powered Photoelectric Smoke Alarm

Kidde Smoke Detector, Hardwired with Battery Backup & Interconnect, Battery Included

Combination Smoke and Carbon Monoxide Detector Alarm, 2-Pack Beeps Warning Smoke and CO Alarms for Basements Travel Home Office House Bedroom Living Room Car, Battery Operated, Comply with UL 217/2034

FIRST ALERT Smoke and CO Alarm, SC7010BA, White

First Alert 9120BA Hardwire Smoke Alarm w/ 9V Battery, Smoke Detector

First Alert SC9120BA Hardwire Combination Carbon Monoxide and Smoke Alarm

First Alert Hardwired Wireless Interconnect Smoke Alarm

TopTes CT-300 Portable Carbon Monoxide Detector, CO Detector with Audible & Visual Alarm, 0-5000PPM, CO Alarm, Backlit LCD Screen, for Home, Car, Camping& Travel (Includes Battery x3) - Orange

Combination Smoke and Carbon Monoxide Detector Alarm, Beeps Warning Smoke Co Alarm Clock for Travel Home Bedroom Living Room Basement Attics, Battery Operated, Comply with UL 217 and UL 2034, 1 Pack

Kidde i12010S 10 Year Hardwired Smoke Alarm Ionization