This is a UNI-T UT673E Solar MPPT Power Meter designed for testing and diagnosing photovoltaic (PV) solar panels.
It measures maximum power up to 2000W, along with peak power voltage (Vmp) and peak power current (Amp).
The device also performs open-circuit voltage (Voc) and short-circuit current (Isc) measurements for panel inspection.
It includes safety features such as over-temperature protection and reverse polarity protection.