The RIDGID A-Frame Fault Locator finds the location of ground faults in direct buried insulated wire up to 2 megohms. It can find faults up to 3 miles away from the transmitter and up to 20 feet below the ground, depending on conditions. It has a durable, lightweight powder-coated frame and weatherproof membrane buttons. It provides a reference readout to aid in fault location. It is composed of two elements: The FT-103 Transmitter and the FR-30 A-Frame Receiver. The transmitter operates at 797 HZ – “dFF” displayed and has an output power of up to 3 watts with low, medium and high settings. The FT-103 Transmitter connects to an insulated conductor to establish a current flow. The current travels to the ground and back to the ground stake via an insulation fault. The FR-30 Receiver detects the current flow and gives audio and visual directions to locate faults. 800-769-7743; www.ridgid.com