Automatic identify and display the type, model and relevant parameter data of controllers. Both data and power flowing on the same lead, no need for external power. It can be used for a variety of battery type settings: gel, sealed impregnation, lithium iron phosphate, lead-acid battery and user (programmable) Real-time display the operational data and working status of the connection devices in digital, graphic and textual forms by a large-screen multifunction LCD. Real-time data monitoring and remote load switchover of the controllers, and data browse and modification of device parameters, charge control parameters and load control parameters.