Product Reviews

Verdict: 4.2/5. The Kidde COP is a compact AC plug-in CO alarm with AA battery backup, rotating plug, and surge protection — no digital display. Budget-friendly plug-in option; step up to COPD for a display at modest extra cost.

Verdict: 4.3/5. The Kidde COPD is a solid AC plug-in CO alarm with AA battery backup, digital display, rotating plug, surge protection, and night chirp suppression — a practical upgrade to the classic plug-in CO alarm form factor.