Input &Output: 24v 3A dc power supply input is: AC100-240V 50/60HZ; output: DC 24 volt 3A 72 Watt. With 5.5x2.1mm DC female connector. Please pay attention to the positive (+) negative (-) pole of the power supply when connecting the light Safety protection design: DC 24v power supply shell is made of insulating material, and the led driver is built with overvoltage, overcurrent, overload, short circuit protection, etc., to ensure your power safety Wide Application: Convert 110V AC to 24V DC, 24V 3A 72W DC power supply is suitable for most 24V DC (0 to 3Amp) products. Widely use for LED strip lights, LED display, wireless routers, switch, security camera, Audio/Video Package Include: 5 x 24V 3A 72W ac to dc led power supply transformer with 3.3ft power cord, 5 x 5.5/2.1 DC female barrel connector to screw adapter. You can contact us anytime if you have any questions Kindly Note: Please be kindly informed that the total wattage of LED strip lights should not exceed the max wattage（3A 72W) of this ac to dc adapter; Suggestion:Used should not exceed 80% of the 24v power supply Applications: for 24V 0 ∽ 72W Electronic devices, Such as LED light, Light string, Printer, Electronic cutting tool, Speaker, Polk and Vivzo soundbar etc, CCTV camera, 3D printer, Humidifier, Atomizer sweeper, Water purifier, LED LCD monitor, Soldering iron, Constant current drivers, Rachio sprinkler, Security cameras, DVR NVR surveillance system, Mobile hard disk, Medical machinery, Computer speakers, Digital photo frame, electric car, electric toy, Industrial equipment etc.