UNI-T UT685B KIT TDR Cable Tester
The UNI-T UT685B KIT is a compact, handheld Time-Domain Reflectometer (TDR) cable tester, meticulously tailored for diagnosing copper cabling such as CAT 5E, CAT 6, CAT 6A, and CAT 8 twisted-pair lines, as well as coaxial cables. Its design emphasizes swift identification of wiring conditions showing wiretaps, open/short circuit locations, split pairs, and cable length all at a glance on a graphical LCD. When paired with the UT683R receiver, it also provides both optical and audio guidance for locating cable runs.
This kit stands out with its support for Power over Ethernet (PoE) diagnostics, capable of sensing whether a cable carries PoE and identifying the specific standard—802.3af, 802.3at, or 802.3bt. It includes integrated ports for RJ45, RJ11, and coax connectors, simplifying testing across multiple cable types without extra adapters. Its TDR technology ensures no “blind spots” during testing and aids in accurately estimating fault distances.
Designed for field technicians and network engineers, the UT685B KIT combines precision with ease of use. A backlit 2.8″ LCD with a graphical interface ensures screen readability even in low-light environments. Built-in protections such as 70 V DC input protection and automatic power-off enhance safety and power management. Its rugged portability is further emphasized by a carry pouch and battery operation, making multilevel cable diagnostics both faster and more efficient.
Features:
- 2.8 inch backlit LCD display
- Graphical interface
- Cable length test
- Tests RJ11, RJ45 and coaxial cable types
- Identify POE standards
- Digital hunt
- Range 500m
- Resolution 0.33m
- 70V DC input protection
- TDR technology: no blind area testing
Specifications:
| Specifications | UT685B KIT |
| Tested cable type | Twisted pair cable: 1. UTP (unshielded cable), 2. FTP (aluminum foil shielded cable); 3. SSTP (double shielded network cable); |
| Coaxial cable: 50Ω, 75Ω, 93Ω | |
| Cable length test | Range: 500 m |
| Resolution: 0.33 m | |
| Accuracy: ± 4% or 0.6 m | |
| POE detection | POE power detection |
| POE standard: 802.3AF | |
| POE standard: 802.3AT | |
| Ethernet port test | √ |
| Cable location | √ |
| Port blinks | √ |
| Input protection | 70VDC |
| Screen | 2.8″ LCD |
| Auto power off | Around 10 minutes |
| General Characteristics | |
| Standard accessories | RJ45 adapting cable: 1 pc; RJ11 adapting cable: 1 pc; RJ11 adapting cable (adapted to alligator clip): 1 pc; Plug, F-connector to F-connector: 1 pc; User manual: 1 pc |
| Power | AAA alkaline batteries x4 |
| Product Dimension | 180mm×84mm×37.8mm |
Applications:
- Network and telecommunications cable diagnostics.
- PoE infrastructure testing and verification.
- Fault locating (opens, shorts, splits, miswires) in twisted-pair and coaxial cabling.
- Cable tracing and mapping in complex installations.
Package Contents:
- 1x UT685B TDR cable tester
- 1x UT683R receiver (included in KIT model)
- 1x RJ45 adapting cable
- 1x RJ11 adapting cable
- 1x RJ11 adapting cable (to alligator clip)
- 1x F-connector to F-connector plug
- 1x User manual
- 1x Carrying bag
- 3x Batteries 1.5 V (AA) — 3 pcs (per Teleshop info; manual says AAA; check exact package)
- 1x Micro USB charging cable
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