Marker-Mate Electronic Marker LocatorDescription Marker Mate Electronic Marker Locator The Marker Mate Electronic Marker Locator (EML 100) is designed to locate all underground electronic markers, including Tempos patented OmniMarker II, at industry standard frequencies when buried up to 5 feet deep. This underground locator is capable of detecting nine different electronic buried utility markers including power, European power, water, sanitary, telephone, fiber optic, gas, cable TV, and