Locators are instruments designed to detect, identify, and track underground infrastructure such as pipes, underground electrical cables, telecommunications networks, and other buried services. They operate using active and passive detection technologies, based on the capture of electromagnetic signals emitted or induced by the conduits themselves or by external transmitters.

This equipment is used in urban maintenance, damage prevention, civil engineering planning, and surveying, enabling safer and more accurate fieldwork. Many models include advanced features such as event logging, GPS connectivity, depth analysis, and multi-frequency modes.