The UNI‑T UT 39+ Series comprises rugged, True RMS digital multimeters built for the electrical industry. With manual/auto ranging, 2000 or 20000-count displays, they support 1000 V DC, 750 V AC, 10 A DC/AC current, resistance, capacitance, frequency, diode/continuity, transistor (hFE), and for some models, temperature and conductance. All models include overvoltage/overcurrent alarms and heavy-duty protection to guard against faulty wiring