The Vevor digital multimeter is a 4000-count TRMS tester designed for measuring DC and AC voltage, current, resistance, capacitance, frequency, temperature, diodes, continuity, and duty cycle. Auto-ranging and True RMS capability help provide accurate readings for both home and professional electrical tasks. It features a backlit LCD display, data hold, max/min recording, automatic negative polarity indication, and over-range indication for easier operation. The compact, lightweight design makes it convenient for troubleshooting appliances, automotive circuits, and electrical equipment. A 15-minute auto power-off function helps extend battery life during use.