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:Allows for various electrical tests including resistance, voltage and current tests with a simple switch.Large screen, high contrast, full symbol display clearly.With a backlight function and flashlight function, suitable for operation under dark environment.Magnetic suction function makes the multimeter stick on metal surface, no worry about falling down.Data hold function, easier to read the measurement result.Turn off automatically several minutes of non-use to save energy.Easy to operate, one-handed operation perfect choice for carry-on measuring.Specifications:Main material: plasticsHeight: under 2000m