Commercial Advertisement Signs Backlight. Channel Letters Backlight store front light. Advertisement Light Box Backlight & Decoration. Ideal replacement of incandescent and fluorescent lights. LOGO advertising billboard, exposed luminous characters. Suitable for Boat cabin & deck lighting, stair, kitchen, courtesy, caravan, garden etc. 1: 20pcs led module each string, they can also be cut off on customer’s requirement. Be sure you cut the connect line between the strip. 2: The controller is optional, but the battery is not included. 3: The power supply is option, but we we do not take responsibility for the installation, please let the profession man to install. 1 x LED 5050 module (20 strip one set). (remote controller and power supply is optional).