3M 7100290212 Coupler is designed for cable, fault, and pipe locator function. It has a 3.00 inch size and a transmitter output of 12W. This coupler requires alkaline batteries for operation. Four active trace frequencies which can be used individually or simultaneously to compensate for varying field conditions. The receiver incorporates passive power and auxiliary frequencies that do not require the use of the transmitter

• Graphic display to distinguish between targeted cable and other cables in congested area
• Four modes of operation - dual peak, dual null, differential and special peak - for accurate locates, even in the most challenging field conditions
• Precisely locates sheath or ground faults on both short and long cable sections