Electrical Features for the Accessible Home http://atlantahomemods.com/DoorsandInteriors.aspx Three way back-lit rocker switches should be used at stairs and wherever necessary to prevent extra walking or walking in the dark. Built-in redundancy in the lighting fixtures should be included – two lamp fixtures are better than one, should a bulb burn out. Clocks, doorbells and smoke detectors with visual features, as well as auditory (lower frequency) alarms are also beneficial.