【Power Specs】 Input: AC 100V-240V 50/60Hz; Output: DC 12V, 1A 12W max; Output adaptor jack size: 5.5mm x 2.1mm; Polarity is inside positive "+", outside negative"-". 【Safety Features】The 12v 1a adapter Certified by UL, FCC, CE, RoHS, CCC. Built in automatic over-voltage protection, over-current protection, over-temperature protection, short circuit protection. Fire retardant shell. Safe to use. Multiple safety systems protect your device very well. 【Wide Application】 This 12v 1a power adapter Convert 100-240V AC to12V DC, widely use for LED light strip, CCTV camera security system, Bluetooth speaker, keyboard, TV boxes, webcam router and more compatible less than 12W devices . Please NEVER OVERLOAD! Otherwise, power supply will be damaged soon. 【Universal Adapter】 Works well with most of devices that draws less than 1A@12V, such as 160mA 250mA 300mA 450mA 0.5A 0.85A 1A . We recommend to use less than 80% of the full load. DO NOT OVERLOAD! 【Quality assurance】Before use, please confirm:Your device's DC socket matches the power adapter;The device's power consumption DOES NOT exceed the adapter's maximum output (shown on the label)If you need any assistance or have questions, please contact us first - we're happy to help resolve any issues! Parameter Input: 100~240V AC, 50/60Hz Output voltage: 12V DC Output current: 1A max Output wattage: 12W max DC plug connector size: 5.5mmx2.5mm; 5.5mmx2.1mm compatible Polarity: internal "+", outside"-" Dimensions: Please refer to the picture. Working Temperature: -20~60℃ Ambient Humidity: 0~95% Non-Condensation Safety Compliance: FCC/CE/RoHS/CCC Dimensions: Please refer to the picture. Package List: 1x 12V 1A power supply adapter 1x DC female connector Kindly note 1) Please don’t use it outdoor. It is not waterproof. 2) Please ensure your devices do not exceed the maximum power output of the power supply 3) The max use should be no more than 80% of the full loads. We recommend you use it to devices not more than 12W. 4) The 12V1A switching power adapter is perfect for electronic products with a voltage of 12V, a current not higher than 1A, and a plug of 5.5x2.1mm, such as:12V CCTV Security Camera and DVR/NVR/HVR Recorder(analog,AHD,TVI,IP), widely use for Wireless Router, LED Strip Light,Audio/Video Player,Printer,Switch,Monitor and other equipment below 12V 1A, please confirm the current voltage and plug size you need before purchasing.