Features: brand new and high quality 4 input/output specification modes: The input/output specification of is divided into 4 modes: low input mode, high input mode, low output mode, and high output mode. Built-in calibration signal generator: This network analyzer can be used as a signal generator. When it is not used as a spectrum analyzer, the MF/HF/VHF sine output is between 0.1MHZ-350MHz, and the UHF square wave output is between 240MHz-960MHz. The color display shows 290 scanning points, covering the entire low-frequency or high-frequency range. ESD for protection diode: A spectrum analyzer with two inputs, 0.1MHZ-350MHz high-quality MF/HF/VHF input, 240MHz-960MHz low-quality UHF input. Switchable resolution band pass filter, suitable for two ranges between 2.6kHz and 640kHz. Frequency range: Use a resolution filter to isolate the input power in a small frequency range. The fastest scanning speed occurs at 300kHz or wider frequencies, about 2 scans per second. The resolution filter scans in the desired frequency range. But as the frequency span increases and the decreases, the scanning speed decreases rapidly. It takes about 2 minutes to scan from 0MHz to 350MHz with an of 10kHz. PC Control: Connect to PC via USB to become a PC-controlled spectrum analyzer. The USB interface implements the Serial over USB (CDC) protocol, and there are a large number of commands that can be called through the serial interface. These commands can be used to perform measurements or update internal settings. After connecting to a for Windows PC, the for Windows driver will be installed automatically. Specifications: Material: metal Size: 2.8inch Colour:Black Nominal Frequency: 100Khz to 960Mhz Size: approx. 100x54x15mm/3.94x2.13x0.59in Package Includes: 1 x Spectrum Analyzer note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!