Kidde KN-COB-DP2 Plug-In CO Alarm with Battery Backup Review (4.3/5) | WC Safety
Verdict: 4.3/5. The Kidde KN-COB-DP2 is the correct residential upgrade over the AC-only KN-COB-DP-LS — 9V battery backup maintains CO detection during outages. Digital display, peak memory, UL 2034 listed.
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