9V 1amp DC plug for 5.5 mm x 2.5 mm x 10mm and an extra 3.5 mm x 1.35 mm x 8mm barrel connector, center positive barrel plug power cord 4 feet converter transformer. Universal 9V 1A AC to DC adapter with 4 feet long extension cord enables you to conveniently make an easy and safe cord connection. Class 2 power supply 100-240V 50/60Hz switching transformer works with 5.5 x 2.5 mm 9 vdc wireless security camera CCTV, 9vdc Motor, lamp charger