UNI-T UT691-10 Visual Fault Locators

UT691-10 visual fault locator is designed for optical ﬁber fault detection and locating, end to end optical ﬁber identiﬁcation and more. It is IP54 rated, uses 650nm visible redlight with 2 emitting modes. With the functions of APO, battery status indicator and ﬂashlight, it can be widely used in the ﬁelds of optical cable construction and maintenance, optical ﬁber communication or sensing, and optical CATV.

Product Datasheet

Categories: Fiber Optical Cable Testers, Network Cable Tester

Description
Brand

The UNI-T UT691-10 Visual Fault Locator is a compact and high-performance tool designed for detecting faults in fiber optic cables. It uses a 650nm visible red laser, so users can easily identify breaks, bends, and weak points in optical fibers. Moreover, the device provides a powerful 10mW laser output, allowing detection over distances up to 8–10 km, which makes it ideal for long-distance fiber testing.

In addition, this visual fault locator supports both continuous and pulse modes, giving users flexibility during testing. Furthermore, it is equipped with a universal 2.5mm connector, therefore ensuring compatibility with common fiber interfaces such as FC, SC, and ST connectors.

The UNI-T UT691-10 Visual Fault Locator features a durable and ergonomic design with IP54 protection, which makes it resistant to dust and light water exposure. As a result, it performs reliably in field conditions such as telecom installations and maintenance work.

Additionally, the device includes a built-in LED flashlight, which helps users work in low-light environments. It also features a rechargeable 3.7V lithium battery with battery status indication, so users can monitor power levels easily during operation.

The automatic power-off function helps conserve battery life, while the lightweight and portable design makes it easy to carry during fieldwork. Because of this, it is widely used by fiber optic technicians, telecom engineers, and network maintenance professionals.

Furthermore, the device is suitable for applications such as optical cable installation, fiber communication systems, CATV maintenance, and network troubleshooting. Overall, it provides a reliable and efficient solution for fast and accurate fiber fault detection.

Features of UT691-10 Visual Fault Locators

Certifications: CE, UKCA

● Non-slip humanized design

● Equipped with LED flashlight

● 3.7V 1050mAh rechargeable lithium battery

● Battery level indicator shows, laser indicator shows

● Red light wavelength 650+/-20nm

● 2.5mm universal connector

● Automatic shut-down

● IP54 protection level

Brand

UNI-T, CHINA

UNI-T Test Equipment Pakistan

UNI-T Test Equipment Pakistan provides reliable solutions for electrical measurement, diagnostics, and electronic testing. The globally recognized brand UNI‑T develops professional instruments used by engineers, technicians, electricians, and electronics professionals. In Pakistan, Sarwar Electronics serves as an official dealer and reseller of UNI-T products, supplying genuine testing instruments to engineers and technical professionals across the country. These tools help users perform accurate measurements, troubleshoot electrical systems, and maintain equipment reliability.

About UNI-T China

UNI‑T (Uni‑Trend Technology Co., Ltd.) is a leading manufacturer of electronic testing and measurement instruments. The company focuses on innovative technology and high-quality manufacturing to support professionals working in electrical, industrial, and electronics environments. Because modern industries require precise measurement tools, UNI-T products combine advanced features with durable design. As a result, engineers can perform reliable diagnostics and measurement tasks in demanding conditions.

UNI-T Product Range

UNI-T offers a wide selection of instruments designed for electrical testing and measurement applications. Popular product categories include:

Digital multimeters
Clamp meters
Digital oscilloscopes
Insulation testers
Power measurement instruments
Electronic testing tools

These instruments allow professionals to measure voltage, current, resistance, and other electrical parameters accurately.

Applications of UNI-T Instruments

UNI-T instruments support many industries that require accurate electrical measurement and diagnostics. Common applications include:

Electrical installation testing
Industrial equipment maintenance
Electronics repair and diagnostics
Power system inspection
Technical training and laboratories

Accurate testing tools help engineers detect faults early and maintain reliable system performance.

Reliable Test Equipment in Pakistan

In Pakistan, Sarwar Electronics provides genuine UNI-T testing instruments for engineers, technicians, and industrial professionals. Access to professional measurement tools helps organizations improve efficiency and maintain electrical safety standards. With continuous innovation and advanced technology, UNI‑T continues to deliver dependable testing solutions used worldwide.