First Alert Plug in Carbon Monoxide Alarm with Digital Display | CO615, AA Battery Backup

Manufacturer statement checked 26 Oct 2026 · source

“First Alert's page for the CO615 Dual-Power Carbon Monoxide Plug-In Alarm with Battery Backup and Digital Display, read 2026-10-26 (SKU CO615XP). Specifications table: Model "CO615"; Sensor Type "Electrochemical"; Power Source "Plug-in"; Battery Backup "Yes"; Backup Battery Size "AA" (2 batteries); Sound Level "85dB at 10 feet"; Warranty "7 Years Limited"; features include a backlit digital display showing CO and power levels and an end-of-life warning. The user manual linked from that page (M08-152692-CO615-US, BRK Brands) prints "CONFORMS TO UL STD 2034" and "Model CO615" on its cover, lists "Standards: Underwriters Laboratories Inc. Single and Multiple Station carbon monoxide alarms UL2034", says the alarm can be plugged directly into a wall outlet located close to the floor, describes a peak CO memory (the display button shows the highest level of CO recorded; the manual says the highest level is saved for 24 hours), and says the battery is for back-up only and "is not intended to power the Alarm for an extended period of time in the absence of AC". The manual's last page says "Replace alarm 7 years after installation" and gives an end-of-life signal about 7 years after installation (read by the independent verifier and checked in the manual's QA pass). The manual also says the alarm can be mounted as a corded unit on a wall or plugged directly into an outlet located close to the floor, and that a wall-mounted unit goes at least 4 inches below the ceiling. UL's own listing directory was not checked, so UL 2034 is manufacturer-stated here.”