KIDDE Compact Carbon Monoxide Detector Model 2030-DCR. Compact and lightweight battery-powered CO alarm, provides essential protection against the dangers of deadly carbon monoxide and provides continuous monitoring of CO levels. The 10-year sensor lasts longer than most other CO alarms. Certified to the latest EN50291-1:2018 Standards. 2 x AA alkaline batteries supplied as standard. Alarm Dimensions 96mm x 61mm x 38mm. Alarm Weight 138g.