2.01 Safety Devices 2.0101 Smoke Alarms 2.0102 Carbon Monoxide (CO) Alarms 2.0103 Water Heating 2.02 Moisture 2.0201 Drainage 2.0202 Ground Vapor Retarders 2.0203 Space Conditioning 2.03 Electrical 2.0301 High Voltage (50 volts or more) 2.04 Radon 2.0401 Radon Precautionary Measures 2.0402 Radon Mitigation Hierarchy Health and Safety