Underground Utility Locator CAT Safety Rating Not Rated Circuit Connection Type Direct Induction Features Locate Underground Utilities by Using the DD120 For Locating Any Metalic Wire with Electric Charge Includes DA175 1 Watt Signal Transmitter DD120 Locator System Carry Bag Locator Type Utility Line Locator Kit (Transmitter Receiver) Maximum Locating Depth 15 ft Operating Frequency 50 Hz 60 Hz Sonde Frequencies 33kHz Testing Modes Auto Power Radio Transmitter