2.0101 Smoke Alarms 2.0101.1 Hardwired (interconnected) Smoke Alarms 2.0101.2 Battery-Operated Smoke Alarms 2.0102 Carbon Monoxide (CO) Alarms 2.0102.1 CO Detection and Warning Equipment 2.0103 Water Heating 2.0103.1 Temperature and pressure relief valve
