UNI-T UT681 Cable Tester

is a compact yet powerful cable testing tool designed for quick and accurate verification of wiring integrity in Ethernet (RJ45) and telephone (RJ11) lines. Ideal for technicians, network installers, and maintenance personnel, the UNI-T UT681 Cable Tester offers fast detection of open circuits, short circuits, crossed pairs, and wrong terminations, making it an essential tool for maintaining stable communication networks.

This tester simplifies the process of troubleshooting and validating cables during installation or maintenance. With clear LED indicators and easy one-button operation, users can quickly determine wiring conditions without complex setup or training. The rugged and portable design allows it to be used on-site, whether in homes, office buildings, data centers, or industrial environments.

Key Features:

•  Detects open circuits, short circuits, miswires, and reversed wiring

•  Supports RJ45 (LAN) and RJ11 (telephone) cables

•  LED indicators display wiring status clearly

•  Remote testing capability for long-distance cables

•  Simple operation — plug, test, and read results

Benefits:

• Saves time during cable installation and troubleshooting

• Reduces the risk of communication errors caused by faulty wiring

• Portable and lightweight — fits easily into any toolbag

• Allows one-person testing using the remote module

• Ideal for testing both terminated and unterminated cables

Typical Applications:

• LAN network installation and testing

• Telephone line verification

• CCTV and security system cabling

• IT department maintenance tasks

• Structured cabling labs and training institutes

Data Sheet (Technical Specifications)