While the considerations for selecting the right lightbar for an agency do center around the lightbar itself, when you're dealing with cars already in service you need to keep in mind compatibility with the currently installed siren/lightbar control head. It's important that the control head already in a patrol vehicle be able to handle the advanced programming of the newer multi-function modular lightbars.
If replacement control head units are recommended, consider the current functionality of the existing head. You don't want install a new control head unit and find out pieces of equipment that had been functional no longer work. According to Code 3 and Federal Signal, all of their lights are considered universal and should still function as normal. But whichever lightbar you consider, you should also research how easy it will be to install the lightbar system and any new control head unit you might need.
Code 3's control box technology, named the V3, controls the lightbar with a mix of a three-way slider, arrow stick directional controller, and 11 additional control inputs that can be used to activate up to 11 additional compatible lights that can also be activated through the V3's control box. This can be mounted in a trunk tray from which it feeds all information through to the control head mounted in the console of the patrol vehicle.
Federal Signal's control box technology similarly offers multiple additional inputs in its Smart Siren Platinum control box, topping out at 17 additional inputs, all available for single activation through corresponding tactile buttons on the interface of the remote control head. In addition, the Federal Signal offering provides the ability to custom program its lightbars, including the Valor and Integrity, with downloadable software that can be accessed from the company's Website.
This technology is not available to every street level officer for their own programming, but is provided to fleet managers so they can input specific light patterns to be used on the agency's vehicles. The fleet manager need only connect an Ethernet cable from the Smart Siren Platinum box directly into a laptop computer, making the system then fully programmable by the end user.