How to use the APP correctly?APP name is " DuoCo Strip ", please search for and install the application in Google play or Apple store or via the QR code on the manual/controller.Note: IOS 8.0 or Android 4.3 or later edition required. Your smart device should support bluetooth 4.0 or later version.Step1: Please download APP ?DuoCo Strip ?Step2: Please make sure your phone is Bluetooth enabledStep3: Then strip lights automatically connect to the APPAttentions1.The lights strip is non-waterproof, suitable for indoor use.Please ensure that the adhesive surface is smooth, and make sure the surface clean, flat and dry before sticking the light strips.2.The arrows should be connected on the same line. If the connection is not "arrow to arrow", the light won?t work.3.Before using the remote control, please pull out the transparent insulation sheet inside the remote control.4.When using the remote control, please point the receiver on the controller, and the remote control distance is 5m.5.The light strips can be cutted every 3 LEDs along the marks, but Please make sure the power off first,then cut the light strip.and if you cut them, you will need one more power adapter to light it up.6.If you have any questions about the use of the APP, you can refer to the Setting-Guide in the upper right corner of the APP interface.Package Include3 x 16.4ft LED Strip Lights1 x 5A Power Supply1 x 24-KEY IR remote Control1x Controller1 x Adhesive Pad2 x 4-Pin Connectors4 x Buckles2 x Right angle Connector1 x Instruction Manual