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UNIT CATV UT691-10 Visual Fault Locator
The UNIT CATV UT691-10 Visual Fault Locator is a professional fiber optic testing tool designed for fast and accurate fault detection in optical fiber networks. It uses a 650nm visible red laser with 10mW output power to identify fiber breaks, bends, leaks, and poor connections over distances of up to 8–10 km. Featuring an IP54-rated durable housing, rechargeable lithium battery, universal 2.5mm connector, and USB charging, it is ideal for FTTH, CATV, telecom, and optical network maintenance.
Key Features
- 650nm visible red laser for accurate fiber fault detection.
- 10mW laser output for testing up to 8–10 km fiber length.
- IP54-rated body for dust and splash resistance.
- Universal 2.5mm optical fiber connector.
- Rechargeable 3.7V 1050mAh lithium battery.
- USB Type charging (DC 5V / 1A).
- Continuous and flashing laser operating modes.
- Built-in LED battery level indicator.
- Automatic power-off after 15 minutes.
- Lightweight, compact, and easy to carry.
- Suitable for FTTH, CATV, LAN, and optical communication systems.
Technical Specifications
| Specification | UT691-10 |
|---|---|
| Model | UT691-10 |
| Red Light Wavelength | 650nm ±10nm |
| Laser Output Power | ≥10mW |
| Measurable Fiber Length | 8–10 km |
| Fiber Optic Adapter | Universal 2.5mm Connector |
| Battery Type | 3.7V 1050mAh Polymer Lithium Battery |
| Working Current | Maximum 80mA |
| Laser Current | <50mA |
| Flashlight Current | <30mA |
| Battery Runtime | More than 7 Hours |
| Charging | DC 5V / 1A USB Charging |
| Battery Indicator | 4 LED Battery Status Display |
| Green Indicator | Auto Shutdown Status |
| Red Indicator | Laser Working Status |
| Auto Shutdown | 15 Minutes |
| Shutdown Current | <50µA |
| Operating Temperature | 0°C to 40°C |
| Storage Temperature | -10°C to 50°C |
| Humidity | Less than 75% RH (Non-condensing) |
| Operating Altitude | Below 2000 m |
| Protection Rating | IP54 |
| Body Color | Red + Gray |
| Dimensions | 130 × 38 × 25 mm |
| Weight | 62 g |
| Origin | Mainland China |
| Battery Included | Yes |
| High-concerned Chemical | None |
Package Includes
- 1 × UNIT CATV UT691-10 Visual Fault Locator
- 1 × USB Charging Cable
- 1 × User Manual
Applications
- FTTH Fiber Installation
- CATV Optical Networks
- Telecommunication Maintenance
- Fiber Optic Cable Inspection
- Optical Network Troubleshooting
- LAN & Optical Communication Systems







- Availability: 100 In Stock
- Model: UNIT CATV UT691-10
- Manufacturer: UNI-T