To make it convenient for car owners to use the car power supply to charge digital products anytime and anywhere, many manufacturers currently have several high-end car power supplies that usually contain multiple interfaces and require functions that can easily operate switches. DAMAVO focuses on insisting on producing high-quality switches that combine high-quality ABS materials, versatility, durability, and multi-device compatibility. It can be widely used in RVs, campers, yachts, speedboats, ships, cruise ships, oil tankers, hotels, airports, aviation, national defense, public facilities, etc.