Welink - Model HSI 3500 -All-in-One Solar Charge Hybrid Inverter

Performance characteristics: Load friendly: Stable sine wave AC output via SPWM modulation. Supports a wide range of battery technology: GEL, AGM, Flooded, LFP, and program. Dual LFP battery activation method: PV&mains. Uninterrupted power supply: simultaneous connection to utility grid/generator and PV. Intelligent programming: the priority of the output from different energy sources can be set. High energy efficiency: up to 99.9% MPPT capture efficiency. Instant viewing of operation: the LCD panel displays data and settings ,while you can also be viewed using the app and webpage. Power saving: power saving mode automatically reduces power consumption at zero-load.  Efficient heat dissipation: via intelligent adjustable speed fans. Multiple safety protection functions: short circuit protection, overload protection, reverse polarity protection, and so on under-voltage and over-voltage protection and reverse polarity protection.