【Professional Digital Multimeter】Features 4000-count LCD display with backlight for precise electrical measurements in various environments. 【AI Smart Measurement Mode】Intelligent auto-ranging technology automatically identifies AC/DC voltage, resistance, continuity, and diode tests without manual selection. 【Non-Contact Voltage Detection】Built-in NCV detection and live wire detection capabilities allow safe electrical testing without direct contact. 【Phase Sequence Testing】Three-phase power system phase sequence detection helps identify proper electrical connections in industrial applications. 【True RMS Measurement】Accurate true RMS readings ensure reliable measurements of AC voltage and current in complex waveforms. 【Multi-Function Testing】Comprehensive testing capabilities include capacitance, resistance, diode, continuity with audible beeper, and data hold functions. 【Ergonomic Design Features】Integrated LED illumination, rear support stand, probe storage slots, and dual-material ABS+TPE construction for comfortable handling. Specifications: AC Voltage: Range 0.5V/4V/40V/400V/600V, Accuracy ±(1.2% of reading + 3 digits) DC Voltage: Range 0.5V/4V/40V/400V/600V, Accuracy ±(1% of reading + 3 digits) Resistance: Range 4000Ω/40kΩ/400kΩ/4MΩ/40MΩ, Accuracy ±(2% of reading + 5 digits) Capacitance: Range 0.1μF/40μF/400μF, Accuracy ±(5% of reading + 10 digits) LIVE Wire Detection: Supported Phase Test: Supported Diode Test: Supported Display Count: 4000 Counts Display: LCD Screen Measurement Mode: Auto/Manual Overrange Indication: Displays "OL" Bandwidth: 40Hz–1kHz Input Polarity Indication: Supported Low Battery Indicator: Supported NCV Detection: Supported Continuity Test: Supported Data Hold: Supported True RMS: Supported Auto Power-Off: Supported LED Flashlight: Supported Dimensions: 126 x 64 x 40 mm Weight: Approx. 137g Power Supply: 2 x 1.5V AAA Batteries (Not Included) Safety Rating: CAT III 600V