It can measure AC voltage and DC voltage, resistance, capacitance, on/off test, frequency, diode, NCV voltage alarm, Live zeroline and fireline judgment. Support line breakpoint detection, and automatic shutdown after 15minutes no operation. Features: Concise AppearanceCompact 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 DisplayLarge LCD color display, red and green backlight alarm, larger font is perfect for middle-aged and elderly electricians use, easy to operate. Intelligent IdentificationPower-on measurement, automatic identification of the measurement signals, no need to change gears, simple and convenient to use. Power on the direct measurement of AC voltage and DC voltage, resistance, circuit on and off, with higher precise, and more accurate measurement to meet various measurement needs. Multifunctional FunctionSupport live zeroline and fireline judgment, line breakpoint detection, it can measure AC voltage and DC voltage, resistance, on/off, frequency, diode, NCV induction test, live zeroline and fireline judgment. And automatic shutdown after 15 minutes of no operation. Triple AlarmSound and light alarm, with higher precise, and more accurate measurement to meet various measurement needs. LED FlashlightWith flashlight for easy illumination and use when measuring in dark environments. Lithium BatteryBuilt-in 400mAh lithium battery, Type-C cable charging, longer lifespan, fearless use. Wide ApplicationsIt can be widely used in electrical testing, automotive repairing, and more household improvements, industrial electrical maintenance, etc. Specifications: Color: Black / Green (Optional) Model: A1X Material: ABS Screen: LCD display with red and green backlight DC Voltage: 0-520V (DC Mode), 0.5-520V(Auto Mode), 0.001V, ± (0.8% +3) AC Voltage: 0-520V (AC Mode), 0.5-520V(Auto Mode), 0.001V, ±(1.2%+5) Resistance: 0.0-19.99, 1, ±(1.2%+5) Capacitance: 1nF-1999F, 0.01nF, ±(3.5%+8) Buzzer on/off: when the measured resistance