Casarain Trading Company is the online retail arm of Rainville Communications Design, LLC,  located in Calfornia's beautiful Napa Valley. We specialize in designing short production run custom accessory solutions for public safety communications, and other markets. Need a specialized item or interface solution? We can draw on over twenty years of experience to find a clean, professional, and affordable solution to your accessory need or interface challenge. Do you require professionally manufactured internal and external accessories or custom cable interfaces? We have the creativity, experience and know-how to make your concept a reality and get the job done. We also sell and support some of the latest micro-controller development and "maker" prototype products, such as Arduino and are actively planning to add even more interesting specialty items.