Features:  Input: 120V~60Hz AC (Wall plug) Output: 9V DC at 500mA Max.  One two pins male universal plug is installed in the adapter One 5' long cable with female socket is included for connecting the battery pack to your lighing system.  Ideal for 12-15 V DC power supply or NiMH/NiCd battery pack charger.  Additional introduction:  Professional manufacturer for kinds of adaptors, AC/DC Adaptors, Battery Chargers, Power adaptors, Switching Power Supply etc.  It's ideal chargers or power supply for types of batteries, lights, audio,  Ethernet adaptors, etc. Brand in "Jiali Electronics", With certificate CE/GS/RoHS/BS/UL/CUL/SAA/PSE, We have transformer types and switching types(electronic types) using different elements 110V 60Hz adaptor 2 pins, 230V 50Hz adaptor 2pins, 3 pins, 110V 60Hz charger, 230V 50Hz charger,  Rated Power from 0.5Watt to 300Watt Features for pictures shown: -- DC12300 12V300mA BS Type AC/DC Adaptor Input: 230V~50Hz AC (Wall plug), Output: 12V DC at 300mA Max. 3.6Watt Three pins male universal plug installed; 5' long cable with types socket is included,  Socket is can be your choice, typical is 5.5x2.1, 5.5x2.5, 4.0x1.7, 3.5x1.3, 5.5x3.3, etc