Wolo (RC-100) Wireless Wizard Univeral Wireless Remote Control System Allows the user to operate a vehicles horn or turn any 12-volt accessory such as warning lights on and off, without having to wire between the engine compartment and the vehicles interior Built with state-of-the-art electronics, assuring years of reliable service Every Wireless Wizard has its own coded transmitter to prevent interference with similar remote control systems Easy to install to any 12-volt car, truck, ATV, boats and industrial equipment, without any special tools and without drilling of holes The remote transmitter mounts with Velcro in a convenient, easy to reach location, and is powered by a 23a type battery, which is included in kit