Features Accurate Recognition --- This visual fault locator can easily and accurately detect and locate fiber optic breaks, poor connections, bends or ruptures. It can operate in continuous wave or pulse mode. VFL emits 650nm red light for fiber tracking and positio Excellent Performance --- The fiber optic tester has multiple functions such as constant output power, low battery warning, long battery life, and remote detection. Effectively conduct fiber optic wiring and continuity checks to generate bright light around Wide in Utility --- A universal 2.5mm connector designed specifically for ST, SC, and FC, which can interfere in the circular and square shapes of different optical cables and can be used for testing single mode and multimode cables. Suitable for comprehens Detection Distance --- The visual fault locator has a strong light source output power of 15mW, and a constant output power. The strong red light propagates 15km maximum in the optical cable. The high effective power circuit provides stable power, continuou Practical Design --- Small in size and light in weight, the pen style design with a bag makes it easy to carry, and optical fiber faults can be easily detected through a visual fault locator. The stainless steel head and aluminum body design can prevent col Specification: Item Type: Visual Fault Locator Model: B3-15 Output Fiber Power: > 15mW Output Wavelength: 650nm Interface: 2.5mm Universal Interface Effective Distance: 15km Operating Temperature: -20 ℃~+60 ℃ Storage Temperature: -40 ℃~+85 ℃ Power Supply Battery: Built in lithium ion battery, 600mAh.  Package List:1 x Visual Fault Locator1 x User Manual1 x Ceramic Core1 x Charging Cable1 x Lanyard Package List 1 x Visual Fault Locator 1 x User Manual 1 x Ceramic Core 1 x Charging Cable 1 x Lanyard