Before you hire the pros, try SleuthGear Defender DD801 for a more complete package, the industry"s most comprehensive counter surveillance device, It detects wired and wireless cameras, wireless mics, audio and video transmitter bugs, as well as visual detection of any hidden camera, In addition, the DD801 remains the professional"s choice for protection against the latest advances in phone tapping, The SleuthGear Defender 801 helps corporate secrets remain secret, sensitive financial data stay private and keeps proprietary information classified, It"s the best product to offer your customers when they want to do the professional counter measure sweep themselves, Detects wired/wireless cameras, wireless mics, audio and video transmitter bugs, and hidden cameras, Advanced technology helps protect against phone taps, Radio Frequency Response 10MHz ~ 8GHz, Telesecurity - Audio Frequency Range: 250Hz ~ 5KHz, Detects:, Wireless tapping even with VOX, Hidden cameras, Hardwired and Wireless, Wire telephone tapping even on cable, Computer and Fax transmitters, Series and Parallel transmitters, Transmitting GPS trackers (only when GPS device is transmitting signal location), Devices on internet phone and IP phone, Laser Tapping, Prevents:, Wire telephone tapping, Laser tapping, Recordings of a voice recorder, tape, digital and parabolic reflector using white noise generator, Includes:, Detection Device Unit, Lens finder attachment, Ac adapter, Carry strap, 2 telephone cables, Earphone, Telephone connector, Quick start guide and instructions, SKU: KJB885