Features: With DC voltage, AC voltage, resistance, continuity, NCV non-contact voltage detection and sound and light indicator alarm functions. With Celsius/Fahrenheit temperature measurement function: temperature measurement range: -40~300°C, accuracy: ±4°C/±(1.0% + 5); Fahrenheit: -40~572°F, accuracy: ±6° F / ± (2.0% + 6). Widely used: AC voltage measurement, simple operation, stable performance, high accuracy; DC voltage measurement, suitable for home measurement, student learning; intensity measurement, suitable for DIY users. EBTN display: The high-definition EBTN color display has a larger visual range, higher contrast and clarity, and the lowest temperature is -10°C. product description: DC voltage: 4V / 40V / 400V / 600V AC voltage: 4V / 40V / 400V / 600V Resistance: 400Ω/4KΩ/40KΩ/400KΩ/4MΩ/20MΩ Frequency response: 40HZ~400HZ on/off test: ≤30Ω buzzer NVC: Sound and light + analog joystick prompt. Automatic range: 4000 display digits Automatic power off: about 15 minutes, just press the button to wake up Low voltage display: start indicator Data retention: HOLD button LCD display: EBTN display backlight Function: Support Size: about 13 * 6.5 * 2.8 cm / 5.12 * 2.56 * 1.10 inches Notice please: battery no include!