---
product_id: 785151981
title: "- NF-859GT Network Cable Tester with Optical Power Meter for RJ45 RJ11 CAT5 CAT6 POE/Phone Lines CAT3 LAN Tone Probe Kit NCV & Ethernet Wire Tracer Fiber Tester Network Tools"
brand: "yiltion"
price: "1025 zł"
currency: PLN
in_stock: true
reviews_count: 9
category: "Yiltion"
url: https://www.desertcart.pl/products/785151981-nf-859gt-network-cable-tester-with-optical-power-meter-rj45
store_origin: PL
region: Poland
---

# POE power supply & polarity detection 7-wavelength optical power meter 10-in-1 all-in-one network tool - NF-859GT Network Cable Tester with Optical Power Meter for RJ45 RJ11 CAT5 CAT6 POE/Phone Lines CAT3 LAN Tone Probe Kit NCV & Ethernet Wire Tracer Fiber Tester Network Tools

**Brand:** yiltion
**Price:** 1025 zł
**Availability:** ✅ In Stock

## Summary

> ⚙️ Master your network game with the all-in-one NF-859GT – because every pro deserves precision and speed!

## Quick Answers

- **What is this?** - NF-859GT Network Cable Tester with Optical Power Meter for RJ45 RJ11 CAT5 CAT6 POE/Phone Lines CAT3 LAN Tone Probe Kit NCV & Ethernet Wire Tracer Fiber Tester Network Tools by yiltion
- **How much does it cost?** 1025 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/785151981-nf-859gt-network-cable-tester-with-optical-power-meter-rj45)

## Best For

- yiltion enthusiasts

## Why This Product

- Trusted yiltion brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Port Flashing Locator:** Sync with POE devices to identify ports by flashing indicators and view real-time speed and duplex mode—cut downtime, boost efficiency.
- • **POE & Network Cable Dual Detection:** Instantly verify POE voltage, polarity, and cable faults on CAT5/CAT6 lines to keep your infrastructure rock-solid.
- • **Ultimate 10-in-1 Network Powerhouse:** Combine cable testing, optical power metering, NCV detection, and POE diagnostics in one sleek device—no more juggling tools.
- • **Accurate Cable Length & Continuity Testing:** Measure cables up to 200m with ±0.5% accuracy and detect shorts or breaks before they become costly headaches.
- • **Precision Optical Metering Across 7 Wavelengths:** Measure fiber optic signals from 850 to 1650 nm with a wide -70 to +10 dBm range for flawless network maintenance.

## Overview

The YILTION NF-859GT is a professional-grade 10-in-1 network cable tester and optical power meter designed for RJ45, RJ11, CAT3, CAT5, and CAT6 cables. It features advanced POE detection, 7-wavelength fiber optic power measurement, cable length detection up to 200 meters, and port flashing for easy cable identification. Compact and battery-powered, it’s ideal for IT managers and network engineers seeking a versatile, reliable tool to streamline troubleshooting and maintenance.

## Description

NF-859GT Network Cable Tester with Optical Power Meter for RJ45 RJ11 CAT5 CAT6 POE/Phone Lines CAT3 LAN Tone Probe Kit NCV & Ethernet Wire Tracer Fiber Tester Network Tools: desertcart.com: Industrial & Scientific

Review: Really helpful tool! - After you get used to it, you can really troubleshoot with the scanner, use the built-in TDR, verify continuity, ping devices, etc. All in all a very very useful tool.
Review: Great Price, Mostly Works, Confusing Learning Curve - This is extremely useful, but also very, very confusing. It's a great price (my coworkers guessed it would be five times the cost, and didn't even believe me when I told them the price until they looked for themselves), but the build feels very cheap. The manual and on-screen instructions are poorly translated, and sometimes say the opposite of what they mean. There are seven (seven!) RJ45 ports between the two pieces, and each function can only be performed with one of them on each side, which leads to a lot of plugging and unplugging as you go through the tests, though it generally does a good job of pointing you to the correct ones to use with arrows on the screen and labels printed on the ports. This is what I've found for each function, and the problems I've run into: Cont - There are two ways to check the continuity/pinouts of a cable with this product: using the tester and the remote wand together, one on each end of the wire; or if you have access to both ends of the wire in one spot the wand can run the test all by itself. Unfortunately, each method uses different ports. The wand-only method uses the ports labelled "CONT-M" and "CONT-R" on the sides of the wand, while the long-distance method uses the "CONT-A" port that is hidden under an unmarked cover on the base of the wand. While the port itself is labelled, the label is also under the cover. If you use the long-distance method with either of the other two "CONT-*" ports it reports all pins shorted together. Scan - This tones wires in two ways: digital or analog. The digital scan works well, but the range seems to be very low: you have to physically touch the wand to the wire to get a hit. The probe on the wand is too thick to fit inside an RJ45 jack, and it won't sound if you press it as far in as you can get it; you have to access the back of the patch panel or plug a cable into the jack and then touch the cable. The analog scan is terrible: very short range, faint, and covered by a lot of static. I tried using my old wand with this toner, and the signal was strong and clear - this new wand was so bad I thought it was defective and sent it in for replacement. The replacement behaved the exact same. Port Flash - Works well. Length - The manual doesn't say, but it has a minimum length limit that's something like 4 meters. It fails with the message "Cable Open or beyond range," and the manual doesn't say which port on the wand to use to complete the circuit. It turns out none of them work, because while the error message complains "Cable Open," it actually is required to be open. If it's plugged into anything on the other end (wand, switch, device) the test fails. Because I believed the error message was accurate, I thought this was defective also, until the replacement exhibited the same behavior. POE - Works well. Ping - Works well, though entering IP information manually is frustrating and unintuitive. First, because the button highlighting looks backwards to me, so I always click the wrong thing first (dull gray is selected; bright blue is not - except while setting the IP address numbers, when it's the reverse); second, because the up/down buttons move the cursor along the address while the OK button changes the selected number and the Back button confirms. It's just weird, and the place where you set how many ping attempts you want to send is labelled "Conut." IP Scan - Works well, but has the same UI problems as Ping. Switch - This one is disappointing. It claims to be "Link Speed Testing," but it doesn't actually test the link speed, it only reports the speed the switch is set to. Despite everything I still really like this product. You can't beat the price, and it does almost everything it says it does, but it was very frustrating figuring all of this out. I hope this review can shortcut the pain of the learning curve for the next person.

## Features

- 🌹【10-in-1 All-in-One Network Tool】ZHOUCE NF-859GT integrates 10 functions—cable testing, optical power meter, NCV, POE power supply detection, and more—into a single device. — Supports RJ11/RJ45 (CAT5e/CAT6/CAT6a) cable and telephone line continuity testing, 10M/100M/1000M device POE testing (including supply voltage and polarity detection), port flashing location, and cable length measurement. The receiver features newly upgraded dual red test probes for smoother operation.
- 🎁【7-Wavelength Optical Power Meter】 Directly covers 7 common wavelengths: 850/1300/1310/1490/1550/1625/1650 nm. Power detection range spans -70 to +10 dBm, delivering precise optical signal strength measurements. Integrated fiber continuity testing paired with POE detection streamlines cabling and maintenance in one step.
- 🌹【POE + Network Cable Dual Detection】The ZHOUCE NF-859GT is specifically designed for POE switches and routers, quickly determining POE power supply status, voltage compliance, and polarity accuracy. It also precisely identifies faults like continuity, short circuits, and cross-wiring in CAT5/CAT6 cables. Non-contact NCV + 1500mAh lithium battery + LED light ensure reliable operation in dark environments, server room cabling, and other complex scenarios.
- 🎁【Dual Red Test Leads】650nm standard wavelength with fast/slow flash modes ensures stable precision. The receiver includes this functionality, supporting: ST/SC/FC cable continuity testing. Combined with POE and network cable testing, it offers portable convenience.
- 🎁【Port Flashing Location】When connected to a POE device, the NF-859GT synchronizes port indicator flashes. The screen displays port speed and duplex mode, even pinpointing POE-powered ports. No more running back and forth to locate cables or ports—identify them instantly.
- 🎁【Cable Length Detection】Measures Ethernet cable lengths from 2.5 meters to 200 meters. Ideal for IT cabling projects and locating cable breaks. Accuracy remains stable with longer cables, with an error margin of only ±0.5%. Combined with POE testing, it helps preemptively avoid power attenuation issues in long-distance cabling
- 🌹【Cross-Model Compatibility】Whether paired with the NF-859GT or NF-859GK receiver, it works seamlessly with multiple transmitter models including NF-859GE, NF-859GH, and NF-859GS. No need to purchase an entirely new set—existing tools remain compatible. Fully supports POE, optical power, and network cable testing functions, preventing equipment idleness and unnecessary duplication of expenses.
- 🌹A Practical Gift for Everyone The perfect thoughtful present for friends and family, network engineers, IT operations specialists, and low-voltage installation professionals! Versatile functionality + portable design—useful on the job and handy for everyday tasks. Ideal for holiday gifts or workplace perks. Customer service responds within 24 hours.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CSJYJ86J |
| Best Sellers Rank | #46,448 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #85 in Network & Cable Testers |
| Brand Name | YILTION |
| Color | Red |
| Customer Reviews | 4.2 4.2 out of 5 stars (44) |
| Included Components | HOST |
| Item Dimensions | 1.2 x 3.5 x 6 inches |
| Item Weight | 12 Ounces |
| Manufacturer | YILTION |
| Measurement Type | CAT5, Multimeter, OPM, RJ11 |
| Model | NF-859GT |
| Power Source | Battery Powered |
| Style Name | Fiber Network Tester |

## Product Details

- **Brand:** YILTION
- **Color:** Red
- **Item Weight:** 12 Ounces
- **Power Source:** Battery Powered
- **Style:** Fiber Network Tester

## Images

![- NF-859GT Network Cable Tester with Optical Power Meter for RJ45 RJ11 CAT5 CAT6 POE/Phone Lines CAT3 LAN Tone Probe Kit NCV & Ethernet Wire Tracer Fiber Tester Network Tools - Image 1](https://m.media-amazon.com/images/I/81fO97Y+erL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Really helpful tool!
*by B***D on September 6, 2025*

After you get used to it, you can really troubleshoot with the scanner, use the built-in TDR, verify continuity, ping devices, etc. All in all a very very useful tool.

### ⭐⭐⭐⭐ Great Price, Mostly Works, Confusing Learning Curve
*by C***L on August 18, 2025*

This is extremely useful, but also very, very confusing. It's a great price (my coworkers guessed it would be five times the cost, and didn't even believe me when I told them the price until they looked for themselves), but the build feels very cheap. The manual and on-screen instructions are poorly translated, and sometimes say the opposite of what they mean. There are seven (seven!) RJ45 ports between the two pieces, and each function can only be performed with one of them on each side, which leads to a lot of plugging and unplugging as you go through the tests, though it generally does a good job of pointing you to the correct ones to use with arrows on the screen and labels printed on the ports. This is what I've found for each function, and the problems I've run into: Cont - There are two ways to check the continuity/pinouts of a cable with this product: using the tester and the remote wand together, one on each end of the wire; or if you have access to both ends of the wire in one spot the wand can run the test all by itself. Unfortunately, each method uses different ports. The wand-only method uses the ports labelled "CONT-M" and "CONT-R" on the sides of the wand, while the long-distance method uses the "CONT-A" port that is hidden under an unmarked cover on the base of the wand. While the port itself is labelled, the label is also under the cover. If you use the long-distance method with either of the other two "CONT-*" ports it reports all pins shorted together. Scan - This tones wires in two ways: digital or analog. The digital scan works well, but the range seems to be very low: you have to physically touch the wand to the wire to get a hit. The probe on the wand is too thick to fit inside an RJ45 jack, and it won't sound if you press it as far in as you can get it; you have to access the back of the patch panel or plug a cable into the jack and then touch the cable. The analog scan is terrible: very short range, faint, and covered by a lot of static. I tried using my old wand with this toner, and the signal was strong and clear - this new wand was so bad I thought it was defective and sent it in for replacement. The replacement behaved the exact same. Port Flash - Works well. Length - The manual doesn't say, but it has a minimum length limit that's something like 4 meters. It fails with the message "Cable Open or beyond range," and the manual doesn't say which port on the wand to use to complete the circuit. It turns out none of them work, because while the error message complains "Cable Open," it actually is required to be open. If it's plugged into anything on the other end (wand, switch, device) the test fails. Because I believed the error message was accurate, I thought this was defective also, until the replacement exhibited the same behavior. POE - Works well. Ping - Works well, though entering IP information manually is frustrating and unintuitive. First, because the button highlighting looks backwards to me, so I always click the wrong thing first (dull gray is selected; bright blue is not - except while setting the IP address numbers, when it's the reverse); second, because the up/down buttons move the cursor along the address while the OK button changes the selected number and the Back button confirms. It's just weird, and the place where you set how many ping attempts you want to send is labelled "Conut." IP Scan - Works well, but has the same UI problems as Ping. Switch - This one is disappointing. It claims to be "Link Speed Testing," but it doesn't actually test the link speed, it only reports the speed the switch is set to. Despite everything I still really like this product. You can't beat the price, and it does almost everything it says it does, but it was very frustrating figuring all of this out. I hope this review can shortcut the pain of the learning curve for the next person.

### ⭐⭐⭐⭐⭐ Cable tester
*by L***R on October 3, 2025*

Just make sure you read the instructions well. It works pretty well, and not tough when you follow the directions.

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-05-11*