Features: MULTIMETER: Measures AC/DC current, AC/DC voltage, non-contact AC voltage (NCV) detection, live/zero line detection, resistance, diode, capacitance, temperature, and frequency. LOUD BEEP: NCV sensor and live/zero line detector send out audible and visual alarm once AC voltage detected. EASY TO READ: 4.77-inch LCD display with backlight enables you to view readings clearly even in the dim light. EASY TO USE: Offers you with auto-ranging and manual ranging mode for extremely simple using experience. SAFE AND RELIABLE: Provided with overload protection and 1000V, 10A test leads, safe and reliable to use. LONG-LASTING: Shockproof and non-slip silicone sheath effectively protects the unit from damage. ULTRA PORTABLE: Measures in 5.6 by 3 by 0.9 inches, the palm-sized multimeter is small enough to be held in hand or put into pocket, easy to carry around. AUTO-OFF: Auto power off within 15 minutes if there is no operation, helps conserve the battery. MORE FUNCTIONS: Features data hold, flashlight, Celsius/Fahrenheit degree, and more.