Wolfhound-PRO Cell Phone Detector is a professional, wireless sniffer specifically tuned to the RF signature of common cell phones (both U.S. & international bands) including LTE, AWS, PCS, CDMA / WCDMA (UMTS), GSM, EGSM Cellular bands as well as GPS trackers and even U.S. DECT 6.0 cordless phones that cause interference with European cellular carriers. Wolfhound™-PRO's high speed scanning receiver utilizes a multi-band DF (Direction Finding) antenna system allowing security personnel to locate 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. Wolfhound-PRO™ identifies each cellphone by frequency allowing for detection and listing of multiple cellphones. This can prove useful in situations in involving a variety of cellphone use such as large prisons and even disaster zones involving search and rescue operations. Wolfhound-PRO has up to 150 foot radius for cell phone detection (indoors) and up to 1 mile outdoors (line-of-sight) making it the most sensitive cell phone detector on the market.