This is an Airstar DT-9205A digital multimeter designed for measuring AC/DC voltage, current, and resistance.
It features a large backlight LCD display and a "HOLD" button to freeze readings.
The device includes a rotary switch with 32 stalls to select functions, including transistor (hFE) and diode testing.
It measures DC current up to 20A and AC voltage up to 750V. [1, 2, 3, 4]