OutBack Power Systems FLEXmax Series MPPT Solar Charge Controller, likely a FLEX

OutBack Power Systems FLEXmax Series MPPT Solar Charge Controller, likely a FLEXmax 60 (FM60) or FLEXmax 80 (FM80) model.
These charge controllers are designed for advanced solar power systems and feature:
Maximum Power Point Tracking (MPPT) Technology: Continuously and actively maximizes photovoltaic array power yield by up to 30% compared to non-MPPT controllers.
Wide Battery Voltage Compatibility: Supports nominal battery voltages from 12 VDC to 60 VDC.
High-Voltage Array Step-Down Capability: Can efficiently recharge a lower voltage battery bank using a higher voltage solar array.
Full Power Output: Operates at full maximum current rating (60A or 80A depending on the model) in ambient temperatures up to 40°C (104°F) thanks to active cooling.
Built-in Display and Data Logging: Features a backlit LCD display showing current status and logs system performance data for up to 128 days.