Skip Content

Underground Utility Locator close
close x

Using 360° Viewing:

  1. Rotate: Use top-to-bottom, side-to-side by use of mouse arrow.
  2. Zoom In: Double click on image.
  3. Zoom Out/Reset: Put photo at full zoom & then double click.
How can we improve our Product Images?

Underground Utility Locator


Price: $2,828.00 / each

Please sign in or register to access lists

  • Item # 1DPH2
  • Mfr. Model # 21893
  • UNSPSC # 41111938
  • Catalog Page # 853
  • Shipping Weight 17.0 lbs.
Country of Origin USACountry of Origin is subject to change.

Technical Specs

  • ItemUnderground Utility Locator
  • Depth UndergroundCan Exceed 15 ft., Depending on Soil Conditions and Transmitter Output
  • Receiver to Transmitter DistanceDependent on Transmitter Output and Soil Conditions
  • For Use OnEnergized/Unenergized Lines
  • Audible AlertYes
  • DisplayBacklit Mapping Display
  • Battery Type(4)C
  • FeaturesTransmitter Sold Separately
  • Includes(4) C-Cell Batteries, Hard Carrying Case, Marker Chips, Training CD, and Instructions
  • Manufacturers Warranty LengthRIDGID Limited Lifetime
How can we improve our Technical Specifications?

Compliance and Restrictions


Alternate Products

Rated 4.7 out of 5 by 10reviewers.
Rated 5 out of 5 by My Favorite Locator The sr-20 is a great locator,but one that is tricky to use.Huge learning curve but if you can master it the benefits of this locator can save you a lot of time and headache.This locator gives you a lot of information,and heads up of other utilities around you.Great tool addition,especially if your a professional locator.It has simple features for novice locators,but a lot of features for pros.I would call this locator a true custom locator. November 27, 2014
Rated 4 out of 5 by product works great After reading the instructions a few times and watching video, I have been able to locate lines...and depth with good results, unit does not get used often so batteries went bad after sitting a while, will not work on plastic lines with out a tracer wire. the unit comes in a nice protective case that holds everything tight and has room for extra batteries November 25, 2014
Rated 5 out of 5 by The SeekTech SR-20 performed as advertised. The SeekTech SR-20 coupled with the ST-510 Line Transmitter and Inductive Signal Clamp made locating underground utilities very reliable. A nice safety feature is it will alert you to additional live cables within the vicinity of the cable that you are trying to locate. The multiple frequency range is handy to pin point your utility. We also use this in conjunction with the SeeSnake camera sonde feature to verify clay drainage pipe routes as well. It takes a little know how and experience to learn how to use the SeekTech to its fullest potential due to all the things it is capable of doing. Overall a great product. November 25, 2014
Rated 5 out of 5 by Easy to learn. This locator is pretty easy to learn and once you learn it easy to use. We have several locators and this is by far the preferred model. we have 8 at this time and will probably buy more soon. I recommend this if you are looking something that is easy to use and want to be able to expand your options with location of other utilities. November 25, 2014
Rated 4 out of 5 by Great item We have tried different brands of line locators and this by far is my favorite unit. November 25, 2014
Rated 5 out of 5 by Outstanding locator! I actually work for a lawn sprinkler company as a service technician. We routinely call 811 to have all the utilities located, but would still run into problems because the locations were never accurate. So I did some research, found the Sr-20 and tried it out. We haven't hit a utility since. If it wasn't the law to call 811 I wouldn't even bother with them. I start every job re-doing the mark-outs with my own. My marks are always directly on top of the utility. Even better then that is the SR-20 tells me exactly how deep it is. The time and energy this one piece of equipment has saved us is almost immeasurable! We also use it to locate sprinkler lines as well.. This is a fantastic piece of equipment and I highly recommend it. November 24, 2014
Rated 5 out of 5 by Extremely easy to use Best tool in the dept. follows the pipe camera or a clamped conductive line. The best part is locating 60hz electric lines with depth displayed without a physical or mechanical hook up. Worth every dollar November 24, 2014
Rated 5 out of 5 by Better Than The Rest! After using numerous brands of locators over the years we have seen what most, would or would not do. Whether following 60 Hz power or something with a transmitter hooked up to it we used the other brands enough to be able to tell when it was telling the truth or lying to you.So without a doubt I can say that the SR 20 is much better than anything else we have used.We have had the opportunity to follow up behind the other brands of locators in the same areas and seen the difference in what they find compared to what the SR 20 comes up with.No comparison for accuracy or ease of use. November 24, 2014

Product Reviews Disclaimer:
Grainger is neither responsible for, nor does it endorse, the content of any product review or statement posted. Any statements posted constitute the statements of the poster and are not the statements of Grainger. The statements posted by Grainger employees with the Grainger employee badge represent the views of such employees and are not the statements of Grainger. Grainger makes no representations as to the appropriateness, accuracy, completeness, correctness, currentness, suitability, or validity of any product review or statements posted, including those posted by employees with the Grainger employee badge, and is not liable for any losses, injuries or damages which may result from any such product review or statements. Use of any linked web site provided in a product review or post is at the user's own risk.