Two Way Radio Battery Eliminator&Two way radio accessories Overvoltage protection function Two Way Radio Battery Eliminator&Two way radio accessories Draw the power from the vehicle DC power supply Rugged housing for extra strength and durabilityOvervoltage protection function Suitable for handheld radio:TK-2170 ,TK-3170 ,TK260,TK360,TK270,TK370,TK278, TK278G,TK378,TK378G,TK388