The newest P-SB7T Spirit Box is a great addition to your ghost hunting kit. The SB7 scans radio frequencies or “white noise” to allow for spirit communication. The SB7 spirit box utilizes a milli-second adjustable Forward or Reverse frequency "sweep" technique coupled with a proprietary high frequency synthetic noise or "white noise" distributed between frequency steps. The newest model features a new Ambient Temperature Deviation Detection (ATDD). The P-SB7 Spirit Box offers an enhanced FM and AM frequency sweep which includes 119 frequencies from 76MHz to 87.9MHz. An adjustable sweep rate provides user flexibility based on individual technique and session circumstances. A bright EL back light display with manual ON/OFF select is ideal for viewing in the dark. The SB7 uses three "AAA" batteries (not included). The P-SB7 Spirit Box is intended to be used by professional investigators to help promote the field of Paranormal ITC Research. Note: there is a protective film on the display screen for safety in packaging and shipping. Please remove this film.