Coax Cable Mapper Kit Locater Tester Satellite Coaxial Line Identifier for Security CATV 30 minutes in "Tone" mode Weight: 4 oz (with battery) Maximum cable length for testing: 3,000 ft. Auto Power Off: 12 seconds after Pass/Fail results Maximum DC cable resistance: 100 ohms, Dimensions: 3-1/4" x 2" x 1-1/4"