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. Our charger is only fits for the output dc 12V Max 1A devices. If your device's output voltage and current are not 12v and exceed 1A, then our charger cannot be adapted for use. Please verify your devices before order 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. Each Jack has a corresponding size and is not suitable for all devices. Please confirm before order that you have a compatible ja