10 Best Loopback Plug Reviewed - Updated April 2024

Reviews Scanned

Networx® CAT6 Gigabit RJ45 Loopback Tester

Check wall to switch connections easily without a cable
Easily check for broken or shorted wires
Must have for all pc and network technicians
A very user friendly and simple device
Compact design allows for testing in the tightest of corners

Sale2

Shaxon CAT5e Ethernet Loopback Adapter RJ48C Jack & RJ45 Male, Dark Blue (MAELCFM-NB-B)

package height : 10.413 cm
package length : 3.555 cm
package width : 9.398 cm
Product type : ELECTRONIC CABLE

CablesOnline 6-Pack 10/100 Ethernet Loopback Plug, Pinout 1-to-3, 2-to-6, Gray TS-UL01-6

RJ45 Male plug
Pin 1 connected to Pin-3
Pin-2 connected to Pin-6
Boot Color: Gray

Sale4

LC/UPC Fiber Optic Circuitors Connector SM & MM Fiber Optic Loopback Adapter LC Interface Signal Loop Connector (LC/UPC SM-9/125)

Fiber Optic Loopback provides a media of return path for a signal, whether the signal is for testing purposes or due to network restoration.
In the case of testing, the loopback signal is used for diagnosing a problem
Sending a loopback test to a network equipment, one at a time, is a technique for isolating a problem.
Low insertion loss，High return loss
LC/UPC interface is available in 5 styles: SM-9/125, MM-50/125, MM-62.5/125, OM3, OM4

Eardion 2pcs Loopback Adapter, Single Mode Fiber Optic Loopback Adapter, Interface Circuitors Signal Loopback Connector (SC/UPC, Single Mode)

【Function】Fiber Optic Loopback Adapter is used to test the signal return in the system or network system. Through the return signal, various potential anomalies in the network link can be detected.
【High Quality Material】Plastic PEI Shell, Insulation and Heat Resistance, Good Stability.
【Stable Performance】Interchangeability, Repeatability, High Stability, Low Insertion Loss, High Return Loss, Repeated Insertion and Removal Times ≥ 1000 Times.
【Ceramic Ferrule】High-quality Ceramic Ferrule, Insertion Loss ≤ 0.20dB, Return Loss ≥ 50.0dB, Loss Change after 1000 Times of Insertion and Removal ≤ 0.20dB.
【Package Include】2pcs Multimode OM4 50/125 Fiber Optic Loopback Adapter.

fyboptwu - 10 Pcs LC Fiber Optic Loopback Adapter Tester Singlemode UPC LC Loopback Plug Standard Duplex LC Connector Loopback Adapter/Test Plug for Testing Applications

Loopback Adapter/Test Plug for Testing Applications
Singlemode LC Testing Tool
Standard Duplex LC Connector
Used in Singlemode 9/125 Fiber for Testing Application
Meets the Telcordia and GR326 stander, all materials compliant with RoHS requirement.

10Gtek LC Fiber Optic Loopback Adapter - LC Connector Singlemode 9/125 (OS2) Test Plug for Testing Applications or Network restorations

【High Quality】10Gtek standard OS2 duplex LC/PC single mode 9/125 fiber optic loopback Adapter with precision ceramic ferrule for maximum optical performance, minimum Insertion Loss and high reliability.
【More Efficient】It is great for troubleshooting fiber links/interfaces and ensuring that the lines aren't broken. When you're not sure the cause of the network issues, the loopback adapter tester saves a lot of frustration.
【Widely Used】The LC/PC connector loopback adapter is widely used for fiber optic testing applications, network restorations and system debugging, etc. It is ideal for diagnosing problem.
【Easy To Use】It is convenient, compact and easy to test the dual LC Single mode fiber optic SFP modules. Plug-and-play, don’t require extra setup. Without housing to avoid small bend radius inside the housing to cause the higher loss.
【Warranty】 100% functionally tested guaranteeing performance and integrity. Customers can enjoy 10Gtek 30 Days Free-returned, 1 Year Free Warranty and Lifetime Technology Support.

CablesOnline 6-Pack 10/100 4-Pair Ethernet Green Loopback Plugs, TS-UL02-6

Pinout: (1-3), (2-6), (4-7), (5-8)
Ethernet networking applications
Boot color: Green
Quantity: 6

GwliUni 4 PCS Single Mode Loopback Plug Tester LC-UPC Fiber Optical Duplex Cable Adapter 9/125

【Main Parameters】Loopback tester are with LC-UPC connector plug and single-mode fiber; supports -20~70℃ operating temperature
【Operating Principle】 Pairwise connected TX transmitting face transmit the signal back to the RX receiver face to test and evaluate the elements or interfaces of the optical fiber network.
【Stable Signal Transmission】 the looper adopts A-level zirconium ceramic core, which is low insertion loss (≤0.3db) and low return loss ( ≥ 50db), high interchangeability (≤0.2db) and high repeatability (≤0.2db)
【Standard Size】 The product meets the dual fiber adapter size standard for easy and accurate plug and pull，which can work more than 1000 times.
【Widely Application】It can detect potential abnormalities by testing the signal return of optical system debugging, optical fiber communication system, CATV system, etc.

Yumyotor 2pcs LC/UPC Multimode Loopback Adapter, Duplex OM3 50/125 Fiber Optic Cable Test Plug

2pcs LC Duplex OM3 Multimode Fiber Loopback Module
Low Insertion Loss≤0.3dB, High Return Loss≥50dB
Easy insertion and extraction with push-pull design
Used in Testing 1G or 10G LC/UPC Interface Transceivers
Designed for Troubleshooting Network Failure Nodes

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