All smoke alarms solely powered by a battery are required to feature a non-replaceable, non-removable battery that is capable of powering the smoke alarm for a minimum of 10 years. Effective date: July 2014

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CO alarms are required in all single- and multi-family dwellings in California. Effective date: January 2011 (new one and two-family dwellings and town homes not more than three stories; July 2011 (all existing single-family homes); January 2013 (all existing dwellings)

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Smoke alarms are required in all residential settings. Hard-wired alarms are required in all new residential construction. Alarms are widely required in all bedrooms and hallways, on every level of the home.  

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