1. The signal generator is small in size, has many functions, easy to operate and easy to carry.2. The key layout is reasonable, all functions have independent corresponding keys, easy to operate.3. Built-in battery, low power consumption, long standby time.Feature: a large 4.77-inch LCD display, automatic range, true effective value, overload protection, shockproof silicone sleeve and audible NCV alarm. Function:Measures AC/DC current, AC/DC voltage, non-contact AC voltage (NCV) detection, live/zero line detection, resistance, diode, capacitance, temperature, and frequency. Loud reminder: NCV sensor and live/zero line detector send out audible and visual alarm once AC voltage detected. Easy to read: The 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. Ultra-portable: Measures in 5.6 by 3 by 0.9 inches, the multimeter is small enough to be held in hand or put into pocket, easy to carry around. Automatic shutdown: Auto power off within 15 minutes if there is no operation, helps conserve the battery. More functions: Features data hold, flashlight, Fahrenheit degree, and more. Specification: Material: ABS Color: As shown Display mode: LCD Maximum display value: 6000 counts Automatic shutdown time: 15 minutes Maximum working height: 2000 meters Battery type: AAA alkaline batteries (2 pcs) (not included) Product size: 142.7x77.4x23.8mm/5.62x3.05x0.94in AC current Range Resolution Accuracy 6000mA 1mA (1.0% reading + 8 digits) 10A 0.01A DC current Range Resolution Accuracy 6000mA 1mA (1.0% reading + 5 digits) 10A 0.01A DC voltage Range Resolution Accuracy