Transmitter, CAT Safety Rating Not Rated, Circuit Connection Type Direct, Induction, For Locating Metallic Lines, Includes (2) 25 ft Coil Connectors, Shoulder Strap, Locator Type Utility Line Signal Transmitter, Maximum Locating Depth Not Applicable, Operating Frequency 0.128 kHz, 1 kHz, 33 kHz, 8 kHz, Sonde Frequencies Not Applicable, Testing Modes Active, Passive, Transmitter Power Output 10 W, Battery Size D, Display Screen Type LCD, Display Type Digital, For Circuit Type Energized Lines