Sonde/Line Locator, Length 11 In, Width 4 In, Height 22 In, Power Source 4 C Batteries, Transmitter Frequency Sonde 512/640/874Hz, 33kHz, Line Trace 512 Hz, 8 and 33kHz, Passive Line Trace 50/60Hz, Locates In-Line Transmitters, Remote Transmitters (Sondes), Includes Hard Plastic Carrying Case, Surface Markers And Clip, Instructional Video, Operators Manual and Batteries RestrictionsNote: See page 791 for 1DPH2 Mapping Display Utility Locator. NaviTrack Pipe and Utility Locating EquipmentPipe/Cable/Sonde LocatorLocates inline transmitters, remote transmitters (sondes), and energized direct buried cables. Push-button readings up to 15 ft. depending on soil conditions and signal strength. Features weatherproof membrane buttons, speaker, low battery warning, and manual gain control.