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.). 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.syi