Large Screen Auto-Range Digital Multimeter True-RMS Voltage Current Capacitance Continuity Temperature Frequency Diode Test 620A Pocket multimeter features palm-size, 4.77-inch big LCD display, auto-ranging, true-RMS, overload for protection, shockproof silicone cover, and audible NCV alarm. It is ultraportable for the maintenance of for cars, electronics, home appliances, HVAC and more. Features: MULTIMETER: Measures AC/for DC current, AC/for 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 for 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. Parameters: (Range / Resolution / Accuracy) AC Current: 6000mA (1mA) (1.0% reading + 8 digits) AC Current: 10A (0.01A) (1.0% reading + 8 digits) for DC Current: 6000A (0.01A) (1.0% reading +5 digits) for DC Current: 0-10A (0.01A) (1.0% reading +5 digits) for DC Voltage: 6V (0.001V) (0.5% reading + 3 digits) for DC Voltage: 60V (0.01V) (0.5% reading + 3 digits) for DC Voltage: 600V (0.1V) (0.5% reading + 3 digits) AC Voltage: 6V (0.001V) (0.5% reading + 3 digits) AC Voltage: 60V (0.01V) (0.5% reading + 3 digits) AC Voltage: 600V (0.1V) (0.5% reading + 3 digits) Line on-off test: If resistance of the line being measured is less than 50, buzzer in instrument will make continuous alarming sounds. Continuity (overload protection: 600V for DC/AC, True-RMS) Resistance: 0-600 (0.1) / 6k (0.001k) / 60k (0.01k) / 600k (0.1k)/ 6M (0.001M) / 60M (0.01M) (0.8% reading + 3 digits) Diode Test: Resolution1V Accuracy0.001V (Testing Environment Testing current: about 1mA; Open circuit voltage: about 2.8V The display shows an approximation of forward voltage drop of diode.) Capacitance: 0-6nF / 600nF / 6uF / 60uF / 600uF / 6mF / 60mF ( 2.5%reading+20 digits) Temperature: -40 ~ 1000 / -40 ~ 1832 (1% reading +3) Frequency (via gear A) Input signal range: 1/4 Full-scale value, 2A AC Current(True-RMS) : 0-100Hz / 1000Hz Frequency (via gear V) Input signal range: 0.8V AC Voltage(True-RMS) : 0-100Hz / 1000Hz Specifications: Material: ABS Color: Black/Red(optional) Display: LCD Max. Display Value: 6000 counts Automatic Shutdown Time: 15 minutes Maximum Operating Height: 2000 meters Battery Type: AAA alkaline battery(2pcs)(NOT INCLUDED) Item Size: 14.27*7.74*2.38cm / 5.61*3.04*0.93in Item Weight: 183.5g / 6.47oz Packing List: 1 * Multimeter 2 * Test Lead 1 * Thermocouple 1 * User Manual Note: *MUST read the user manual carefully before use for safety. *Battery not included.