[Concise Appearance] Compact size, easy to carry and does not occupy an area, the portable pen type makes it can be easily carried, and say goodbye to the traditional heavy and difficult to carry [Large LCD Display] Large LCD color display, red and green backlight alarm, larger font is perfect for middle-aged and elderly electricians use, easy to operate [Intelligent Identification] Power-on measurement, automatic identification of the measurement signals, no need to change gears, simple and convenient to use. Power on the direct measurement of ACvoltage and DCvoltage, resistance, circuit on and off, with higher precise, and more accurate measurement to meet various measurement needs [Multifunctional Function] Support live zeroline and fireline judgment, line breakpoint detection, it can measure ACvoltage and DCvoltage, resistance, on/off, frequency, diode, NCV induction test, live zeroline and fireline judgment. And automatic shutdown after 15 minutes of no operation [Triple Alarm] Sound and light alarm, with higher precise, and more accurate measurement to meet various measurement needs. [LED Flashlight] With flashlight for easy illumination and use when measuring in dark environments [Lithium Battery] Built-in 400mAh lithium battery, Type-C cable charging, longer lifespan, fearless use [Wide Applications] It can be widely used in electrical testing, automotive repairing, and more household improvements, industrial electrical maintenance, etc. Specifications: DC voltage: Range: 0~520V (DC mode) 0.5~520V (automatic mode), resolution: 0.001V (accuracy ± (0.8% + 3)) AC voltage: Range: 0~520V (AC mode) 0.5~520V (automatic mode), resolution: 0.001V (accuracy ± (1.2% + 5)) Resistance: 0.0Ω~19.99MΩ, resolution: 1Ω (accuracy ± (1.2%+5)) Capacitance: 1nF~1999μF, resolution: 0.01nF (accuracy ± (3.5%+8)) On-off: When the measured resistance is less than 50Ω, the buzzer sounds Diode: Automatic identification of diodes less than 3V Automatic relationship: 15 minutes Battery: 400mAh/3.7V Dimensions: 146*44*25.2mm Weight: 73g