3M™ Electronic Marking System (EMS) Caution Tape 7900 Series
Caution tape with integrated radiofrequency (RF) path markers eliminates tracer wire issues while providing reliable detection of buried utilities.
The 3M™ EMS Caution Tape 7900 Series combines RF path marker technology with marking tape for underground utility applications to address utility detection and identification challenges.
Each utility type operates on a unique frequency to prevent interference and support accurate and efficient identification during locate operations.
RF path markers work independently without requiring a continuous connection. If a section of tape is damaged or removed, the remaining markers continue to be detectable.
Eliminates the need for grounding and complex tracer wire installation procedures. Tape lays flat and comes in dispenser boxes for quick, efficient deployment.
Underground utility damages are still common and often preventable. These statistics from the 2024 DIRT Report & Public Dashboard underscore the need for improved locating practices.
Each material is carefully selected for its ability to deliver long-lasting identification for underground utilities.
Open Trench
11 mil (.28 mm)
+Add 2 cm at RF marker
20% at failure
500 ft (152 m)
Excellent resistance to acids.
Good resistance to alkalis.
8 ft (2.4 m)
Supporting documents for the evaluation of 3M™ Pathmarking Tapes. Contact us for additional information or guidance.
Magnetic Resonators for Locating Underground Assets by 3M covers the principles and advantages of RF pathmarkers in underground asset detection.
Proper installation of caution tapes ensures optimal location for buried utilities. See the installation sheet for step-by-step instructions.
Brochure created by 3M for the 3M™ Electronic Marking System (EMS) Warning Tape 7900 Series product line.
Choose the right configuration for your project. Customizable options are available to match your utility type and identification requirements.
If you're ready to upgrade your marking system, tell us about your next project. A member of our sales team will reach out shortly.