PocketHound™ Cell Phone Detector is Berkeley's Varitronics Systems' highly sensitive yet most easily concealed cell phone detector on the market. The receiver is specifically tuned to the RF signature of common cell phones (both U.S. & international bands) including PCS, CDMA / WCDMA (UMTS), GSM, EGSM Cellular bands. This breadth of band detection allows security personnel to locate any nearby cell phones in either standby mode* or during active voice, text or data RF transmissions making it the perfect tool for enforcing your NO WIRELESS security policy. PocketHound prevents wireless usage by detecting nearby (up to 75 feet indoors line-of-sight) cell phone use all from the user's pocket or in the palm of their hand. PocketHound's auto threshold feature only detects cell phone activity above the RF noise in any environment. This prevents false triggers and alerts the user to any cell phone activity with custom sequences of bright LED flashing (adjustable dimmer) and also provides vibration for completely covert, in-pocket detection. PocketHound™ is designed and manufactured in the U.S.A.