Firex Plug-in Carbon Monoxide Detector, 9-Volt Battery Backup and Digital Display, CO Detector

The digital readout of the Kidde Plug-In Digital Carbon Monoxide Alarm with 9-Volt Backup continuously displays carbon monoxide levels from 30 to 999

Kidde Nighthawk AC Plug-in Operated Carbon Monoxide and Explosive Gas Alarm with Digital Display

Kidde Firex Hardwired Carbon Monoxide Detector with 9-Volt Battery Backup 21029892 - The Home Depot

FireX Hardwire Smoke and Carbon Monoxide Combination Detector with 9V – Arborb

Carbon Monoxide Detectors

Kidde Carbon Monoxide Detector, Propane, Natural, Methane, & Explosive Gas Alarm, Plug-In Wall with 9-Volt Battery Backup, Digital LED Display - Combination Explosive Gas Carbon Monoxide Detectors

FireX Hardwire Smoke and Carbon Monoxide Combination Detector with 9V – Arborb

Plug-in Carbon Monoxide Detector with 9V Battery Backup and Digital Di – Arborb

Kidde Firex Plug-In Carbon Monoxide Detector with 9-Volt Battery Backup and Digital Display (6-Pack) 21010620 - The Home Depot

Kidde Firex Plug-In Carbon Monoxide Detector with 9-Volt Battery Backup and Digital Display (6-Pack) 21010620 - The Home Depot

Kidde Nighthawk AC Plug-in Operated Carbon Monoxide and Explosive Gas Alarm with Digital Display