Visual and audible left/right guidance system for heads-up operation gives this lightweight Cable Locator an excellent balance and a %22Searchlight%22 quality. Lower frequency Cable Locator for tracing long distances on power, oil and gas transmission lines. The lower audio frequency prevents signal from %22bleeding%22 or %22jumping off%22 onto adjacent lines. 9.8 kHz high-powered transmitter. Isolates single line in a congested area. Ideal for power, gas distribution pipeline location.