3M™ Electronic Marker System (EMS) Ball Markers include a self-leveling design which helps ensure horizontal positioning underground, improving detection consistency even when installation conditions vary.
Advanced marker construction helps support precise underground locating.
Built for long-term use in underground environments.
Marker system operates without external power or batteries.
3M™ EMS Ball Markers are designed to help identify underground utilities such as power lines, conduits, splice points, service access points, and junctions when located.
Store facility-specific information such as depth, type of asset, installation date, or maintenance notes—for fast, positive identification using 3M™ Dynatel™ Locators
Self-leveling ball design helps maintain correct orientation even if backfill shifts, supporting consistent detection throughout the asset’s lifecycle.
3M™ EMS Extended Range Ball Marker is specially designed for locating flush mounted facilities that are covered by backfill. It is affixed to the underside of non metallic lids or covers over flush mounted facilities. This self align marker offers positive identification of facilities.
3M™ EMS Extended Range Ball Marker provides an effective way of marking underground facility lines. It withstands a temperature range of 4 to 122 °F ( 20 to 50 °C). This passive underground marker with a water resistant polyethylene shell does not react with any chemicals or minerals. This ball marker effectively operates without the need for any external power source.
Self-leveling, passive markers engineered for long-term underground accuracy
Self-Leveling
Helps ensure horizontal positioning for consistent detection
Passive Antenna System
Operates without external power
Water-Resistant Polyethylene Shell
Helps protect the marker from soil, chemicals, and moisture
3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use. Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice. Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage. For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.