The remote lighted emergency sirens give you the options needed to take control. Serial Interface upgrades are available to allow control of LEDX2100SC lightbars and accessories via the remote emergency sirens system. There is a virtual control head kit available to allow control of both the remote lighted emergency sirens and the RLS serial interface system via laptop PC or MDT. One serial plug controls your light and sound. The load manager option allows you to guard against depleting the vehicle's battery to the point that the vehicle cannot be started. This is great protection for your vehicle and safety. It is designed to deliver true 100 watt output with outstanding clarity. There is even a park kill mode on most of our emergency sirens.