This local digital solar meter is provided as an assembly that replaces the TriStar front access cover. The digital solar meter will display a great deal of information about the TriStar controller and the operation of your system. In addition, the meter enables manual functions and controller diagnostics as a solar control panel. These capabilities will increase your confidence that the system is working properly and will help you to improve system reliability, battery life, and system performance. This solar control panel meter is designed for the TriStar 45, TriStar 60, TriStar MPPT 45 and TriStar MPPT 60.