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:1. Backlight Display: This digital multimeter uses a backlight display, press the yellow button, the backlight of the display will turn off automatically after about 5 seconds.2. Comfortable Hand Feel: With silicone test pen, comfortable hand feel, thick multi core copper wire, the total length is about 90cm.3. Rubber Shell: This electrical instrument uses a rubber shell, which is insulated, drop proof, dust proof, and the protective cover feels comfortable in the hand, thick and drop proof, and preserves the body.4. Multi Gear Knob: This voltmeter has a multi gear knob, intuitive display, and color distinction, strong sense of pause, easy to operate.Specification:Item Type: Digital MultimeterMaterial: ABSGross Weight: 330g / 11.6ozProduct Size: Approx.145 x 75mm / 5.7 x 3.0inMaximum Voltage between Terminals and Grounding: CAT II 600VFuse Protection: F1200mA 250VBattery: 9V Battery, 6F22 Capacity: 800MAH (shipped with built in battery)Display: 1999Overrange Rndication: 1Working Environment: 0 to 40Storage Temperature: -10 to 50