3 Different Tones Selected From Front Panel F-connector Port For Toning & Tracing Of Coaxial Catv Cabling Systems 2 Tone Amplitudenormal & Half Constant Tone Amplitude Over Life Of Battery Auto-off Of Tone After 3 Hours To Conserve Battery Life Separate Talk Battery Status For Increased Voltage & Power For Test Sets Rj Jack Allows Use Of Modular Cable Or Alligator Clips Features Low Battery Indicator Includes 9v Battery