UNI-T UT685A KIT TDR Network Cable Tester

The UNI-T UT685A KIT TDR Cable Tester is a multifunctional network cable testing instrument designed for installation, maintenance, and troubleshooting of Ethernet and telephone cabling systems. Using Time Domain Reflectometry (TDR) technology, it measures cable length and helps locate faults such as open circuits and short circuits, making it a practical tool for network technicians and IT professionals.

The UT685A KIT supports CAT5/CAT6 twisted-pair cables, including UTP, FTP, and SSTP types. Its wire-mapping and crimping tests help identify incorrect wiring, polarity issues, and poorly terminated RJ45 connectors. The tester also detects Power over Ethernet (PoE), identifies supported PoE standards, and checks Ethernet port connectivity and link speed.

With a 2.8-inch LCD, digital cable tracing, and a separate receiver, the UT685A KIT simplifies cable identification and network troubleshooting. It is suitable for structured cabling installations, server rooms, telecommunications maintenance, and commercial network infrastructure.

Features:

• TDR Cable Testing: Measures cable length and identifies the approximate distance to cable faults.

• Wire Mapping: Detects wiring errors, incorrect connections, and polarity issues.

• Crimping Test: Checks eight-core RJ45 cable termination, with results available in approximately one second.

• Cable Length Measurement: Measures cable lengths from 2.5m to 300m.

• PoE Detection: Detects PoE voltage and identifies supported IEEE 802.3af, 802.3at, and 802.3bt standards.

• Ethernet Port Testing: Checks network port connectivity and identifies 10M, 100M, and 1000M link speeds.

• Port Flashing: Helps locate the connected network port on compatible switches.

• Digital Wire Tracing: Traces RJ11 and RJ45 cables using a digitally modulated signal.

• NCV Function: Provides non-contact AC voltage detection.

• LCD Interface: Displays cable status, length, wiring sequence, and fault information.

• Input Protection: Provides protection up to 70V DC according to the manufacturer's specifications.

• Receiver Included: Supports cable identification and tracing during field installation.

Specifications:

• Brand: UNI-T

• Model: UT685A KIT

• Product Type: TDR Network Cable Tester

• Supported Cables: CAT5/CAT6 twisted pair, UTP, FTP, and SSTP

• Wire Mapping: Supported

• Crimping Test: 8-core cable test

• Crimping Test Response Time: ≤1 second

• Cable Length Range: 2.5m–300m

• Length Measurement Accuracy: ±1.6m up to 20m; ±2.4m from 20m to 100m; ±3.2m above 100m, according to the manufacturer's specifications

• Fault Location: Open-circuit and short-circuit distance detection

• PoE Voltage Range: DC 5–60V

• Supported PoE Standards: IEEE 802.3af, 802.3at, and 802.3bt

• Ethernet Link Speed Detection: 10M/100M/1000M

• Wire Tracing Range: Up to 3000m for RJ11 and 1000m for RJ45, under suitable conditions

• Tracing Frequency: 125kHz

• Display: 2.8-inch LCD

• Input Protection: 70V DC

• Power Supply: 3 × 1.5V AA batteries for the main tester; receiver battery configuration depends on the supplied kit

• Operating Temperature: 0°C to 45°C

• Storage Temperature: -20°C to 60°C

• Drop Resistance: 1m

• Package Includes: UT685A tester, receiver, RJ45 adapter cable, RJ11 adapter cable, RJ11-to-alligator-clip adapter, Type-C charging cable, AA batteries, carrying pouch, and user manual, subject to the supplied package version.

Applications:

• Ethernet network installation and troubleshooting.

• CAT5/CAT6 structured cabling verification.

• Server room and data network maintenance.

• RJ45 connector crimping and wiring checks.

• Telephone cable identification and tracing.

• PoE network installation and troubleshooting.

• Network switch port identification.

• Detection of cable breaks and short circuits.

• Telecommunications and IT infrastructure maintenance.