The UNI-T UT205A is a digital clamp meter designed for measuring AC current up to 1000A. It also functions as a multimeter, capable of measuring AC/DC voltage, resistance, frequency, and duty cycle. Some models may also include diode and continuity testing.   

Features:

AC Current Measurement: Up to 1000A.   
AC/DC Voltage Measurement: Typically up to 600V or 1000V depending on the specific model or revision (older UT205 vs. newer UT205A+).
Resistance Measurement: Up to 40 MΩ.
Frequency Measurement: 10 Hz to 10 MHz.
Jaw Opening: Around 40mm to 45mm, allowing measurement of conductors of significant size.   
Display: Typically a 4000-count LCD with a backlight for easy reading in low-light conditions.   
Safety Rating: CAT II 600V or CAT III 300V, some newer versions like the UT205A+ offer CAT II 1000V/CAT III 600V.
Additional Features: Auto-ranging, data hold, low battery indication, continuity buzzer, and diode test. Some versions might include relative mode and non-contact voltage detection (NCV).  
 
The UNI-T UT205A (and its variations like the UT205A+) is considered a reliable and portable tool suitable for electricians and maintenance professionals for a variety of electrical measurements. It offers a good balance of functionality and affordability.   

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