Flexzion Solar Charger Controller MPPT Tracer - Solar Panel Battery Regulator Tracer Smart Overloading, Short-circuit Safe Protection, LCD Display (MT50) Displays the model type, system status and relevant parameter data of the controllers Real-time display of the working status and operational data in graphic & textual forms Easy to navigate 6 button layout allows direct and rapid adjustments No external power supply needed. Data and power flows on the same lead Easy to set up. Comes with a wall mounting frame & 2 meter RJ45 Ethernet cable