3M Electronic Marking System (EMS) Caution Tape 7900 Series is an intuitive and virtually maintenance-free solution for marking and locating the path of buried assets in environments with complex terrain and congested underground systems — while helping to eliminate the problems and costs associated with tracer wire and test stations. Thanks to the embedded 3M EMS Point Marker's frequency dedicated for each type of utility, this tape helps to quickly and easily locate underground utility networks — with no need for access points. Its design also helps ensure accurate location when damaged and does not require metallic continuity for locating, as a locatable signal is provided by 3M EMS Point Markers embedded in the tape every eight feet that are activated using a 3M Dynatel Locators 7000X Series. Choose 3M Electronic Marking System (EMS) Caution Tape 7900 Series for a fast, easy, and reliable solution that provides accurate and consistent results, even in the most demanding conditions.3M Electronic Marking System (EMS) Caution Tape 7900 Series is one of many products in the 3M Locating and Marking System that provide solutions for stress-free management and maintenance of buried assets. This product family also includes 3M EMS Point Markers, which offer the precise marking of points along buried lines, utilizing a passive antenna that operates in most soil types, both wet and dry. Additionally, the 3M Dynatel Locator 1400X, 2500X, and 7000X Series complements the overall marking system by locating both buried cables and 3M EMS Point Markers. It also reads, writes, and locates 3M iD Markers, utilizing both integrated GPS and Bluetooth communications for enhanced functionality and a large, backlit, high-resolution graphic display for maximum legibility. For a complete solution for locating, marking, and mapping underground networks, turn to the 3M Locating and Marking System.