What is the use of Universal AC/DC adapter ?
Also known as battery eliminator, universal AC adapters are used to convert AC electricity (i.e. 120V or 240V) to a desirable DC current (i.e. 1.5,3,4.5,6,7.5,9 or 12 Volt DC). Some battery operated items with DC input includes walkmans, baby monitors, telephones which can be used with AC adapters universally.