UNI-T UT683KIT Wire Tracker and Cable Tester, RJ45/RJ11, NCV, Port Flash

UNI-T UT683KIT Wire Tracker and Cable Tester, RJ45/RJ11, NCV, Port Flash

The UNI-T UT683KIT is a transmitter-and-receiver kit for tracing network, telephone and other metallic cables and diagnosing common wiring faults. It can locate a specific cable among multiple wires, validate RJ45 conductor sequence, detect open circuits, shorts and miswiring, and check polarity and ringing/AC signals on RJ11 lines. NCV and Port Flash functions provide additional assistance when working with electrical wiring and active network infrastructure.

Key specifications:
RJ45 and RJ11 • ≥3000 m disconnected-line tracking • ≥100 m active-network line • 125 kHz tracing signal • NCV >40 V AC • Port Flash • 1050 mAh rechargeable batteries

Key features

• Transmitter/receiver cable tracing – identifies individual network, telephone and other metallic cables without removing their insulation.
• RJ45 cable validation – checks conductor sequence and identifies correct wiring, shorts, opens and miswiring.
• RJ11 line diagnostics – detects open and short circuits, polarity and ringing/AC signals.
• Port Flash function – when the transmitter is connected to an active switch, router or network interface, the relevant network-port indicator can flash to help identify the connected port.
• NCV non-contact voltage detection – the receiver provides audible and visual warning when AC voltage above 40 V is detected near a cable or socket.
• Adjustable receiver sensitivity – signal strength increases as the probe approaches the target cable, while sensitivity adjustment helps isolate individual wires in dense cable bundles.
• 125 kHz modulated tracing signal – used for cable identification and tracing.
• 3.5 mm headphone jack – allows the tracing tone to be monitored through headphones in noisy environments.
• Built-in flashlight – useful when working in cabinets, racks and poorly illuminated locations.
• Rechargeable batteries – both units use 3.7 V / 1050 mAh rechargeable lithium batteries; specified operating time is over 8 hours for the transmitter and over 5 hours for the receiver.

Applications

The UNI-T UT683KIT is designed for structured cabling, telecommunications and low-voltage system installation, servicing and troubleshooting.

Typical applications include:

• tracing RJ45 Ethernet cables;
• tracing and checking RJ11 telephone lines;
• tracing metallic wires and cables;
• identifying a specific cable in a bundle;
• validating network cable conductor sequence;
• detecting opens, shorts and miswiring;
• identifying an active network port with Port Flash;
• preliminary AC voltage detection using NCV.

The kit is useful for network installers, telecommunications technicians, low-voltage and security-system technicians, and users servicing Ethernet or telephone cabling.

Compatibility and limitations

• Main interfaces are RJ45 and RJ11.
• RJ45 cable validation requires the two ends of the cable to be connected to the transmitter and receiver.
• The manufacturer's RJ45 wiring-fault examples are specified for unshielded cables.
• Port Flash requires the cable to be connected to active network equipment such as a switch, router or network interface card.
• The specified ≥3000 m tracing distance applies to disconnected-line tracing and does not represent through-air receiver detection distance.
• Tracking distance on an active switch/network line is specified as ≥100 m.
• NCV is an indicative non-contact voltage detection function and is not a substitute for a suitable contact voltage tester when safe isolation must be verified.
• Do not use the product on live circuits exceeding 60 V AC or 70 V DC.

Technical specifications

Parameter	Specification
Instrument type	Wire tracker and cable tester kit
Main units	UT683T transmitter and UT683R receiver
Main interfaces	RJ45, RJ11
Tracing signal	Modulated signal
Carrier frequency	125 kHz
Tracking distance, disconnected line	≥3000 m
Active switch/network-line tracking distance	≥100 m
RJ45 cable validation	Yes
RJ45 fault identification	Correct wiring, short circuit, open circuit, miswire
RJ45 test speed	Fast / slow
RJ11 continuity check	Open / short circuit
RJ11 polarity test	Yes
RJ11 ringing / AC indication	Yes
Port Flash	Yes
NCV	Yes
NCV indication threshold	>40 V AC
Receiver sensitivity adjustment	Yes
Audible tracing indication	Yes
Headphone jack	3.5 mm
Flashlight	Yes, receiver
Low-battery indication	Yes
Battery voltage	3.7 V
Battery capacity	1050 mAh
Battery type	Rechargeable lithium battery
Charging supply	5 V DC
Charging time	Approx. 2 h
Transmitter operating time	>8 h
Receiver operating time	>5 h
Operating temperature	–10…50 °C
Storage temperature	–20…60 °C
Operating humidity	20–75% RH, non-condensing
Storage humidity	10–90% RH, non-condensing
Operating altitude	≤2000 m
Transmitter dimensions	130 × 51 × 28 mm
Receiver dimensions	197 × 48 × 34 mm
Transmitter weight	Approx. 95 g
Receiver weight	Approx. 127 g
Applicable standards	EN 61326-1:2013; EN 61326-2-2:2013; EN 61000-3-2:2014; EN 61000-3-3:2013
Conformity	CE, RoHS

Design and operation

The transmitter provides RJ45 and RJ11 ports, cable-sequence indicators and Port Flash functionality. The receiver includes the tracing probe, adjustable sensitivity control, NCV detection, audible indication, a 3.5 mm headphone jack and flashlight.

When the target cable is mixed within a dense bundle, receiver sensitivity can be reduced as the probe approaches the strongest signal, helping to distinguish the required cable from adjacent wires.

Important operating and safety notes

• Do not use the UT683KIT on live circuits exceeding 60 V AC or 70 V DC.
• Do not use the instrument during thunderstorms.
• Before tracing an unknown metallic conductor, verify that it does not carry hazardous voltage.
• NCV is an auxiliary indication only and must not be used by itself to prove that a circuit is de-energized.
• Do not use or store the instrument in excessively dusty, hot or wet environments.
• The transmitter and receiver are charged from a 5 V DC supply.
• At approximately 3.4 V battery voltage the power indicator flashes; at approximately 3.0 V the instrument automatically shuts down.

Package contents

• UT683T transmitter
• UT683R receiver
• USB charging cable
• RJ11 adapter cable
• RJ11 alligator-clip adapter cable
• RJ45 adapter cable
• Carrying pouch ```