The compact and reliable UNI-T UT681L tester enables quick checks of RJ45 and RJ11 network and telephone cables. With clear LED indicators, you can easily detect opens, shorts, crossed pairs, and miswiring. Thanks to one-button operation, two test modes, and 9V battery power, it is an ideal choice for technicians’ daily work as well as home use.
The UNI-T UT681L is a practical tester for rapid diagnostics of Ethernet and telephone lines. It supports RJ45 and RJ11 connectors and uses LEDs (LED1–LED8, LED_G) to immediately display the status of each conductor, including shielding. You can choose fast or slow test modes as needed.
The device is powered by a 9V battery, offers auto power-off after 10 minutes, and a low-battery indicator. Its durable red–gray design, compact dimensions, and low weight make it easy to carry in a service bag. It complies with CE and UKCA safety standards, so you can rely on it both in the office and in the field.
Main advantages:
- Fast diagnostics of opens, shorts, crossing, and incorrect wiring.
- RJ45/RJ11 support, including Ethernet cable shielding test.
- Simple operation with a single button, clear LED indicators.
- Two test modes for different situations.
- Mobile operation on a 9V battery, auto power-off, and low-capacity indication.
- Compact and durable construction with CE certification.
Specifications
- Manufacturer
- UNI-T
- Model
- UT681L
- Supported connectors
- RJ45, RJ11
- Test functions
- Detection of shorts, opens, crossing, and miswiring
- Test modes
- Fast, slow
- Result display
- LED indicators (LED1–LED8, LED_G)
- Ethernet cable shielding test
- Yes
- Power supply
- 9V battery
- Auto power-off
- After 10 minutes of inactivity
- Low-battery indicator
- Below 7.2 V
- Control
- Single button
- Operating temperature
- 0–40 °C
- Storage temperature
- -10–50 °C
- Operating humidity
- 20–80% RH
- Storage humidity
- 10–90% RH
- Maximum operating altitude
- ≤ 2000 m
- Safety standards
- CE EN61326-1:2013, EN61326-2-2:2013
- Net weight
- Transmitter: 87 g; receiver: 51 g
- Dimensions
- Transmitter: 102 × 62 × 28 mm; receiver: 102 × 37 × 28 mm
- Color
- Red–gray
- Package contents
- Cable tester (transmitter and receiver), 9V battery, user manual (EN)
