1. wide-band antenna (for ANT1 socket) Wider coverage, particularly at lower frequencies, has made it possible to increase the detection distance of a conventional VHF/UHF bug , while saving perfect sensitivity at the higher bands (GSM, Wi-Fi,Bluetooth, etc.) 2. antenna (for ANT2 socket) when an affordable RF detector gets the microwave logperiodic directed antenna supplied in the standard set. 2-4 times longer distance to all sources above 2GHz (Wi-Fi 2.4GHz, Wi-Fi 5GHz, Bluetooth, Wi-Max, LTE High, etc.). The directionality provides easy pinpointing of a wireless source. you not only know that there is a Wi-Fi source, but can quickly pinpoint it. 3. Magnetic field signal detection,install the magnetic probe,turn on the power, press the strong magnetic detection switch, the purple indicator on the top of the magnetic prob after the light is on,enter the magnetic field signal detection standby,and the magnetic field induction probe is close to the magnetic field source, before the white LED of the the terminal LED light up and the buzzer alarm. 4. RF/MAG switch,Press it to the right MA,adjust Sensitivity to maximum,pls install the magnetic antenna,there is a light on the antenna,then adjust the balanced potentiometer,the sixth of light extinguish.Because of high sensitivity,detector will be effected by geomagnetism and Surface remanence of iron products,will have mistake reminder,pls adjust the knob to fit the environment. 5. ANT1/ANT2 The Vprotech has two separate RF channels which work with the two corresponding antennas. The ANT1 channel (1) is used for the detection of the wide frequency range 50-6000MHz in order to perform searches for all types of transmitters, including room, car, body-worn, telephone or other types with different methods of modulation, both analogue and digital, including the following bands: VHF, UHF, GSM 900/1800/1900 MHz