3M 7100177965 | 1401-XR 4" Diameter Ball Marker

Description

The 3M 7100177965 1401 XR Ball Marker is a passive, self leveling 3m marker ball engineered for positive identification of flush mounted underground telephone facilities. Designed for installers and local technicians, the marker ball is mounted beneath non metallic lids to produce repeatable locate signatures without external power. The water resistant polyethylene shell resists common chemicals and minerals and operates over a wide temperature range (-4°F to 122°F / -20°C to 50°C). Sized at 4.0 inch diameter and rated for burial depths up to 5 feet (1.5 m), this extended range underground marker provides a durable, low maintenance solution for marker balls for underground locating applications. Its passive antenna and self leveling design simplify installation and ensure horizontal positioning beneath lids and covers.

Product Features and Benefits

Self leveling design for consistent placement

Self aligning geometry ensures the passive antenna remains horizontal for reliable location signatures and repeatable detection performance.

Passive antenna in sealed polyethylene shell

Encapsulated antenna requires no external power and resists water, soil chemistry and mineral exposure for long service life.

4.0" diameter, engineered for extended range

Standard 4" form factor delivers predictable performance as an Extended Range Underground Marker 4 inch class product.

Rated for 5 ft burial depth

Specified marker depth up to 5 feet (1.5 m) to support common installation practices for secondary and flush-mounted vaults.

Temperature and chemical resistance

Operates from -4°F to 122°F (-20°C to 50°C) and does not react with chemicals or minerals typically encountered in backfill.

Frequently Asked Questions

What is a 4 inch Extended Range Underground Marker used for?

It is used to mark and enable locating of flush mounted underground utilities such as telephone vaults and service covers.

Are these marker balls for underground locating passive or powered?

The 3M 7100177965 marker balls are passive and require no external power source.

How deep can this marker ball be buried and still be located?

This ball marker is specified for burial depths up to 5 feet (1.5 m).

Is the 1401 XR ball marker chemically and temperature resistant for long-term use?

Yes, the polyethylene shell resists chemicals and operates between -4°F and 122°F (-20°C to 50°C).

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