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.Features:1. Digital Multimeter: The digital multimeter can measure AC and DC voltage, AC and DC current, resistance, capacitance, frequency, continuity, ambient temperature, NCV, true RMS, live wire, diode.2. LCD Screen: LCD screen greatly enhance the reading experience. Backlight function make it very easy to read even in bright sunlight or poor light.3. Smart (AUTO) Measurement: In smart mode, it can automatically measure AC / DC voltage, resistance, short circuit and frequency.4. Flashlight Function: Flashlight design lets you test efficiently and comfortably anywhere, indoors and outdoors, day and night.5. Convenient & Easy The digital multimeter lets you test safely and efficiently light and compact, easy to carry.Specifications:Model: FY123Color: BlackShell Material: ABS 28 )Display: 6000 counts LCD displayOver Range Indication: LCD will display "OL"Maximum Allowable Voltage Between Measuring Terminal and Earth: 600V DC or 600V AC RMSBattery Low Voltage Indication: YESData Hold: YESFlashlight Function: YESOverload Protection: YESAuto Shutdown: No operation after 5 minutesInput Polarity Indication: Automatically display "-" signPower Supply: 3 x 1.5V AAA battery ( not included )Item Size: 16.2*8*2.4cm / 6.38*3.15*0.94in Net Weight: 218g / 7.69ozPacking Size: 20.5*13.5*4cm / 8.07*5.31*1.57in Packing Weight: 430g / 15.17ozPackage List:1 * Multimeter