Best First Alert Alarm Clocks

First Alert CO605A Carbon Monoxide Plug-In Alarm with Battery Backup

First Alert SC9120A Hardwire Smoke & Carbon Monoxide Alarm

First Alert Battery Operated Smoke and Carbon Monoxide Alarm, White, PRC700A-6

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

First Alert SC9120BA Hardwire Combination Carbon Monoxide and Smoke Alarm

First Alert Hardwired Wireless Interconnect Smoke Alarm

First Alert Battery Operated Carbon Monoxide Alarm with Digital Display

Alarm Clock, Digital Clock, Auto Night-Mode, 3-Level Led Brightness, Battery Powered, 12/24Hr, 1.2'' Red Digits Display, Simple Alarm Clock for Kids Adults Girls Boys, Easy to Set

USCCE Digital Alarm Clock Radio - 0-100% Dimmer, Dual Alarm with Weekday/Weekend Mode, 6 Sounds Adjustable Volume, FM Radio w/Sleep Timer, 2 USB Charging Ports, Thermometer, Battery Backup(Wood Grain)

FAMICOZY Simple Easy to Use Digital Alarm Clock,Small Compact,Auto Dim at Night and 6 Manual Brightness adjustments,Mains Powered,Crescendo Alarm with Snooze,12/24hr,Black