Replacement controller (ballast) for Chandler Systems' UV11D, UV15D, and UV20D Ultraviolet disinfection systems.  Can also be used to upgrade a system with a UVC-4 controller to the deluxe version.  This controller requires a lamp key to function, which is not included.  If your existing controller has a lamp key in it, you can continue to use that key in the new one, or you can purchase a new lamp, which will come with a new key.

Controllers are warrantied for 3 years.