Overview
Emissions And Stack’s High-Power Rechargeable 50mW Visual Fault Locator Pen is a compact but powerful tool designed for fiber optic testing. This device features a pen-type design with a 650nm semiconductor laser to emit stable red light, making it ideal for locating bends and breaks in both jacked and bare fiber up to 50 km. It is also useful for identifying connectors in patch panels and tracing fibers during splicing operations. This product connects easily to multimode and single-mode optical fiber cables, enabling accurate fault detection in optical jumpers. Essential for optical engineering construction, network maintenance, and research, it is portable, rugged, and user-friendly for field use.Key highlights of this device include a 2.5mm universal connector, selectable CW or 2Hz glint operation, easy fiber break and bend identification, to-end fiber recognition, complete mechanical point detection, crash-proof and dust-proof laser head, and an automatic power-saving mode that shuts off after 10 minutes of inactivity. It delivers consistent output power, offers long battery life, and is highly portable for convenient field testing.
Features
- Pen-type Visual Fault Locator with compact and portable design
- High output power up to 50mW for accurate fiber fault detection
- 650nm red laser suitable for single-mode and multimode fibers
- Detects fiber breaks, bends, and connector issues in patch panels
- 2.5mm universal connector for versatile fiber compatibility
- Operates in CW (continuous) or 2Hz glint modes
- To-end fiber identification for easier fiber tracing
- Crash-proof and dust-proof design for the laser head
- Portable and rugged, ideal for field testing and network maintenance
- Automatic power-saving mode shuts off after 10 minutes of inactivity
- Constant output power for reliable performance
- Long battery life with built-in rechargeable lithium battery
- Lightweight (0.15 kg) and easy to carry for field applications
- Compact dimensions: 1752626mm
Technical Specifications
| Type | Visual Fault Locator |
| Output Power | >50mW |
| Wavelength | 650nm |
| Testing Distance | 3 to 5 to 10 to 20 to 30 mi (50 km max) |
| Optical Connector | FC or SC or ST |
| Laser Mode | CW or 2Hz glint |
| Fiber Compatibility | Single-mode or multimode |
| Features | Portable, rugged, crash-proof and dust-proof laser head, constant output power, power-saving mode (auto shut-off after 10 min idle) |
| Work Temperature | -4 °F to +140 °F (-20 °C to +60 °C) |
| Weight | 0.33 lb (0.15 kg) |
| Dimensions | 6.89 in * 1.02 in * 1.02 in (1752626 mm) |
| Battery Type | Built-in rechargeable lithium battery (two 5th batteries) |






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