UNI-T UT691-10 Visual Fault Locator – 10mW Fiber Optic Tester, 8–10km Range

Description

Product Overview

The UNI-T UT691-10 Visual Fault Locator is a portable fiber optic testing instrument used to trace optical fibers and locate visible fault points. It emits red laser light into a compatible fiber, helping technicians identify breaks, sharp bends and connection problems during installation, troubleshooting and maintenance.

Designed for field use, the UT691-10 supports continuous and pulse laser modes. Its 2.5 mm universal fiber optic connector, rechargeable battery and integrated flashlight make it a practical tool for technicians working on fiber communication and cable infrastructure.

Key Features

– **10 mW-class laser output:** Manufacturer specification lists output of at least 10 mW.
– **8–10 km specified fiber range:** Intended for locating faults across compatible optical fiber links; actual performance depends on fiber and connection conditions.
– **650 nm red light:** Makes fault points easier to identify where light escapes from damaged or sharply bent fiber.
– **Two operating modes:** Continuous and pulse modes support different testing workflows.
– **2.5 mm universal connector:** Compatible with supported fiber connectors using the appropriate interface.
– **Rechargeable battery:** Built-in 3.7 V, 1050 mAh battery.
– **IP54 protection:** Provides rated protection against dust ingress and water splashes.
– **Integrated flashlight and battery indicator:** Useful for field maintenance and checking remaining charge.

Technical Specifications

| Specification | Details |
|—|—|
| Brand | UNI-T |
| Model | UT691-10 |
| Product type | Visual fiber optic fault locator |
| Laser output power | ≥10 mW |
| Red light wavelength | 650 ± 10 nm |
| Specified optical fiber range | 8–10 km |
| Connector interface | 2.5 mm universal / FC-style |
| Laser modes | Continuous and pulse |
| Battery | 3.7 V, 1050 mAh rechargeable lithium battery |
| Battery life | More than 7 hours, manufacturer specification |
| Auto power-off | 15 minutes; adjustable or cancellable according to manufacturer documentation |
| Protection rating | IP54 |
| Dimensions | Approximately 130 × 38 × 27 mm |
| Net weight | Approximately 62 g |
| Certifications | CE and UKCA, according to manufacturer information |

Specifications are based on UNI-T’s UT691 series documentation. Confirm the latest datasheet and supplied accessories when placing an order.

Applications

– Fiber optic cable installation and commissioning
– Locating breaks and bends in optical fiber
– Fiber network troubleshooting and maintenance
– Fiber identification and continuity checks
– Telecommunications and data communication infrastructure
– CATV and compatible optical sensing installations

Buyer Guidance

Confirm that the fiber connector and adapter are compatible before testing. A visual fault locator is used to trace visible red light and locate faults; it does not replace an optical power meter or OTDR when quantitative loss measurements or detailed fault-distance analysis are required.

**Laser safety:** Never look directly into the laser output or into the end of a fiber connected to the device. Follow the manufacturer’s laser safety instructions.

UAE Supply and Quotation

Dynavation Star Electrical Fittings Trading LLC supplies fiber optic testing equipment and electronic components for contractors, network technicians, system integrators and commercial buyers across the UAE. Contact our team on WhatsApp to confirm the UNI-T UT691-10 model, availability and quotation for your requirements.