Compatibility: ONLY FOR 12 VOLT DC POWER SUPPLY UNIVERSAL DEVICES 12 V 100 mA to 1000 mA switching 12 v power supply, fits for 12 V 1000 mA; 900 mA; 800 mA; 700 mA; 600 mA; 500 mA; 400 mA; 300 mA; 200 mA; 100 mA transformer charger for universal devices Specification: Input: AC 100 V to 240 V 50 to 60 HZ Output: DC 12 V Max 1 A; 10 pieces standard wall 110 v to 12 v converter charger replacement jacks. Plug Polarity: positive inside negative outside; Plug Size: 5.5 mm 2.5 mm (applicable 2.1 mm) 10 Interchangeable Jacks: 10 Pieces different sizes replacement plug jacks which can be used for most of your dc in 12 v power cord devices. Regulated dc 12 v power replacement safe charging for your DC 12 V 1 A devices, more choices and easty to carry Reliability: CE FCC Listed charger for electronics regulated switching power supply has checked to work with 12 V max electronics equipment, pass the overcurrent protection; overvoltage protection; short circuit protection and over temperatur