Noted:1)Please make sure 12 V voltage and current matches your device requirements. If the device requires more than 1Amp (1000 ma) then it will not be compatible, if less than 1A then it will work.2)It features 2 kinds of DC connectors, works with devices equipped with 5.5mmx2.5mm and 3.5mmx1.35mm DC connector. NOT works with 5.5mmx2.1mm devices and other DC connectors, please kindly check your device model, output and plug size before buying, and would make sure that the size of the plug of the adapter can match your devices3)Non-waterproof, indoor use only.4)Can not be compatible with smart phone, and connected with laptop is NOT recommend.How to Choose the right AC DC Power Adapter for your DevicesInput Voltage Range: 100 VDC - 240 VDCType of Voltage output : DC 12V outputCurrent requirements: 1ADC Connector Size: 5.5x2.5 mm and 3.5x1.35 mmPolarity of Connections: Center Positive12V 1A DC power cord 4 feet extra long extension chord for small household electronics devices. If you need to replace a bad power supply of your wireless security camera, replace the wall plugs chord that was chewed by your puppy, or a 12v 1a dc adapter replacement cord for the lost original lamp cord, this 12v AC to DC power adapter class 2 power supply 100-240v 50/60hz is a perfect choice for your charger replacement, upgrade and spare power needs.Power Specification:Input Connector :US wall plug two prongInput voltage range: 100 VDC - 240 VDC (100vdc, 120vdc, 200vdc, 240vdc, etc.)Rated input frequency: 50Hz/60HzInput current: 0.5A max at full loadOutput Connector :DC Male Barrel Plug: 5.5x2.5mm, 3.5x1.35mm (Center Positive)Output voltage: 12VDCOutput current: 1000 mA, 750mA, 500 mACable length: 1.2 meter (4-foot)UL Safety Certificates ApprovedPackage contains:1x Switching power adaptor 12v 1a AC to DC Plug