SolarEpic EPEVER MT-50 Remote Meter LCD Display fit for Tracer BN Series MPPT Charge Controller NOT FIT for RENOGY & HQST MPPT Automatic identify and display the type, model and relevant parameter data of controllers Real-time display the operational data and working status of the connection devices in digital, graphic and textual forms Direct, convenient and rapid operation of six navigation function keys Both data and power flowing on the same lead, no need external power supply Please be noted that this MT-50 is NOT compatible with MPPT sold by other vendor