UL 300 mA Universal AC-DC Adapter 12V 9V 7.5V 6V 4.5V 3V

Determine the proper output voltage,check the rating plate or number of batteries used in product Set the selector switch to the proper voltage Six ADAPTOR PLUGS are supplied with your adaptor,Determine which ADAPTOR PLUGS best fits into the external power supply jack(sometimes labeled "DC IN" of set to be powered) Before attaching ADAPTOR PLUGS into external power jack, check instruction or rating on the power jack to determine tip polarity, Reversed polarity may cause permanent damage to the product. Please read instruction attached at back of package carefully before use it.