| Model | B3A-05 / B3A-15 / B3A-20 / B3A-30 Type-C Rechargeable Fiber Optic Test Light Pen(VFL) |
| Output Power | >5mW (B3A-05), >15mW (B3A-15), >20mW (B3A-20), >30mW (B3A-30) |
| Wavelength | 650nm |
| Fiber Connector Compatibility | 2.5mm universal adapter, supports FC, SC, ST connectors |
| Power Supply | 2 x AAA batteries or rechargeable lithium battery (optional) |
| Charging Port | Type-C |
| Charging Methods | Computer USB, wall charger, power bank, car charger |
| Working Distance | Up to 30km fiber optic testing |
| Power Display | Digital LED display for remaining power and working time |
| Display Units | “H” for hours (>2h), “M” for minutes (<2h) |
| Light Source Features | Stable output, high-quality red laser, long lifespan, strong penetration |
| Mode Switching | Flip-cap auto-on or button activation; long press LED key for mode change |
| LED Illumination | Built-in LED light for dark environments |
| Button Material | Soft silicone for comfortable touch |
| Dimensions | 126mm x 34.7mm x 16.7mm (or 18mm) |
| Weight | 40–52g |
| Storage Temperature | -40°C to 85°C |
| Operating Temperature | -20°C to 60°C (non-condensing) |
| Housing Material | Durable and lightweight ABS plastic |
| Hidden Ceramic Tube Storage | Independent compartment for spare ceramic tubes |
| Safety Lanyard | Included for secure handling during elevated work |
| Dual Power Modes | Supports both replaceable and rechargeable batteries |
| Instant Start | Flip-cap for immediate power-on |
| Portable Design | Compact and lightweight for easy field use |
| Universal Application | Suitable for fiber continuity check, break detection, and general fiber optic testing |
| LED Indicator | Visual feedback for device status |
| Battery Compartment | User-friendly structure for quick battery replacement |
| Strong Battery Life | Extended operation on a single charge or battery set |
| Easy Charging | Multiple charging options for maximum convenience |
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