Kn Cob Dp Ls Kidde Nighthawk Plug In Co Alarm Review
Verdict: 4.0/5. The Kidde Nighthawk KN-COB-DP-LS is a plug-in CO alarm with digital display but no battery backup — suitable for commercial and rental use on always-powered circuits. For residential use, choose the KN-COB-DP2 or COPD for outage protection.
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