NETcat® 500 Pro Structured Wiring Troubleshooter

Troubleshoot Problems with Telephone Circuits Quickly & Easily

We Guarantee to Have the Best Price

What's special about this Greenlee telephone tester?

  • Excellent for testing shielded twisted pair (STP) unshielded twisted pair (UTP) and coaxial cables
  • Four distinct tones for tracing low-loss cables like CAT 5
  • Identification of active network devices (PC or Hub) on 10/100 Base-T networks
  • Detection of faults, opens, reversed, crossed and split pairs
  • Backlit easy touch display with screen view adjustment is easy to use
  • Click for More Features

Simple one touch testing verifies network cabling and service. The NETcat® Pro is a digital tool for fast and accurate testing of cables, wiring and network services. Operated using a back-lit touch screen display, the Pro 500 not only tests wiring continuity and confirms pair allocation, but measures the length of cables and determines if network service is accessible. When used with the NC-510 accessory kit containing seven (7) expansion remote test modules, the NETcat® Pro can uniquely test coax or twisted pair jacks from a central location eight (8) at a time. Using either a finger tip or the built in stylus pen, the screen can be used to control and display a range of tests from fault finding to TDR length measurement.


GL-NC-500 NETcat® 500 Pro Structured Wiring Troubleshooter 1.25 lbs
GL-NC-510 NETcat® 510 Pro Accessory Kit
Includes: Zippered Case, 7 Expansion Remote Test Modules
0.75 lb
  • Displays network device capabilities
  • Office identification using remote ID units
  • Remote jack ID and verification
  • 2000 foot cable length via TDR
  • Noise immune tracing
  • Coax and modular connections built in
  • Patch cable and remote jack wire-map
  • Uses a single 9V battery, with low battery indicator
  • Pulsed time domain reflectometer (TDR) shows length of all pairs
  • Troubleshoots and verifies a wide range of networks


Power Requirements 9V Alkaline battery (PP3)
Display LCD Dot Pixels: 128 x 128 dots
Viewing Area 60.0 x 58.4
Backlight White LED
Buttons LCD touch-screen, Single momentary contact push button
Operating Temperature 0° C to 50° C
Storage Temperature -20° C to 70° C
Interface Connections RJ45 shielded jacks, F-type threaded female coaxial connectors
TDR Calibration User selectable based on a known cable length
Range of 50 to 2000 ft 40% to 100% in step of 1%
Length 2000 ft Maximum
Resolution 1 ft.
Accuracy to Open/Short +4% or 2 ft. whichever is greater
Remote Identifier 2000 ft. (609.6 meters) maximum distance
Wiremap 358 ft (100 meters) maximum distance
Weight 1.25 lbs







Tele-Mate Communication Test SetTelephone Test Set
Waterproof tested to an IEC IP67 rating, these test sets are so impervious to water they can actually withstand submersion. The PE950 and PE961 feature our DigAlert over-voltage alarm and lock-out function to eliminate the danger of damaging or knocking out digital service lines.
RG6 coaxial cableRG6/U Coaxial Cable - PVC, Plenum, Siamese
From / 500ft
Our RG6/U cable is a higher quality 75Ω coaxial cable that is a higher grade cable than RG59 and therefore a better choice where performance is important. It uses a larger, higher-capacity center conductor (18 AWG) and a larger insulating dielectric.
Cat 5E and Cat 6 cableCAT 5e Solid PVC - BULK
From per 50 FT
Available in PVC and Plenum rated jackets, the Cable Organizer CAT5e UTP PVC 350Mhz cable comes in various colors for easy identification and color-coding.

Do you have any question about this product?
Let our experts and customers resolve all your doubts

we will beat a competitor's quote by 5%

Did you know that we can give you a quote for most of our products, including shipping?

You can also call us toll free 866.222.0030


by PowerReviews
Greenlee - NETcat 500 Pro Structured Wiring Troubleshooter

(based on 1 review)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 1 customer

Displaying review 1

Back to top

(2 of 3 customers found this review helpful)


great it just for the TDR.

By Derek

from Jefferson City, MO

About Me High bandwidth user

Verified Buyer


  • Touchscreen


  • Calibrate First

Best Uses

  • Home Networks
  • Small Offices

Comments about Greenlee - NETcat 500 Pro Structured Wiring Troubleshooter:

Works great except I think the TDR would be better if I calibrated the handheld using a known length of UTP or coaxial cable. The wiremap display is good but not great, because for the price it should just tell you if pairs are crossed, split, open, short, etc., instead of having to reference the manual....the more used the more understood!!! Those are the only two cons to the device, otherwise I like it a lot.

  • Primary use:
  • Personal

Displaying review 1

Back to top

What can make this page better?

We do everything we can think of to provide you with the product specs, images and ordering info you need, but if we're missing something or still have room to improve, please let us know. Your comments, suggestions and questions are the best tools we have for serving you better!