Description
The 3M 7100178151 (Disk Marker 1411‑XR‑1H) is a passive locator disk designed to securely mark underground, flush‑mounted utilities like telephone handholes. Encased in a water‑resistant polyethylene shell, it ensures durable performance even when facilities become buried under backfill, debris, or vegetation. Providing reliable signal return up to 5 ft (~1.5 m), this non‑metallic lid marker supports accurate location without external power. A core component in 3M passive locator disk systems, it enables precise mapping and maintenance of buried assets.
Product Features and Benefits
Passive Antenna for Accurate Utility Location
Designed to reliably respond to an RF signal via a utility locator, the disk marker supports consistent detection under non‑metallic lids up to 5 ft range.
Flush-Mount Compatibility for Surface Enclosures
Mounts easily to the underside of plastic or composite covers over utility vaults—ideal for disk marker for buried utilities applications without obstructing lids.
Orange Water-Resistant Poly Shell for Durability
Encased in bright orange polyethylene, the unit withstands temperature extremes of –4 to 122 °F and resists moisture ingress for long-term field use.
No Power or Batteries Required
As a respirator battery charging unit—sorry, mistaken reference—this unit requires no power source, ensuring low maintenance and reliability underground. Passive design avoids potential failure due to battery depletion.
Product Specifications
Manufacturer Part Number | 7100178151 |
Legacy SKU | 80611629348 |
Frequently Asked Questions
Can this disk locate utilities buried up to 5 ft deep?
Yes, provides reliable location signal through standard locators to approximately 5 ft.
Is this a non-metallic lid marker for utilities?
Yes, designed to mount under non-metallic lids covering buried enclosures.
Does the 3M 7100178151 locator disk work without batteries?
Yes, it's fully passive and requires no external power.
Is this suitable for marking underground utility infrastructure?
Yes, ideal for flush-mounted utilities such as telephone, water, and cable enclosures.

Warning:
This product can expose you to materials and/or chemicals including arsenic, lead, and other materials and/or chemicals which are known to the state of California to cause cancer and/or reproductive harm.
For more information, visit www.P65Warnings.ca.gov