The PSB11 sweeps radio stations faster than other spirit or ghost boxes during paranormal investigations. It is created specifically for ghost hunting.This ITC device has been used on paranormal TV shows and on investigations and has created remarkable EVPs that relate to the investigated site. It is believed that the white noise and the fast scanning of radio frequencies gives the energy for transmission that spirits need to get their voices through to us. To be able to listen to captured EVP, have a Voice Recorder next to your SB11. You can choose between AM or FM Sweep or run both at the same time. Running AM and FM at the same time is often reported to create clearer EVP transmissions. You can also choose either Forward or Reverse Sweep and which Rate of Sweep you want. The SB11 offers faster Sweep Rates than other Ghost Boxes and this is one of the reasons it has a higher probability of creating even more and clearer EVPs. One can also turn the adjust the use of the antenna and turn it off. Turning it off reduces the possibility to pick up radio stations and confuse that with real EVPs. The SB11 also features Temperature Detection Deviation to - or + 5 degrees F. Sudden dr ops in temperature is believed to back up possible paranormal activity occuring. Also convenient is the built in Red Led Flashlight. It is night vision friendly and will have minimum interference with capturing video and photos during the investigation. It also has Dual Simultaneous Audio Outputs so that one can do dual sweeps simultaneously or on just one side if one wants and one can choose to do so in either FM or AM. The P-SB11 also can be Expanded and Upgraded if new features are presented by the manufacturer. Powered by a 9V battery (not included). Strongly recommend Lithium Battery for the absolute best performance of the P-SB11 !