Passive or active modes of tracing. Detection of underground live wires. Detection of underground wires with no voltage (radio mode). Detection of underground wires with no voltage using a transmitter (galvanised, inductive or clamp-based connection). Tracing metallic or non-conductive pipes using an additional probe. Tracing non-conductive pipelines using a ?floating? probe. Tracing a determined cable. Determining the depth of a cable.