Description: Widely Used: 2.5mm universal connector, included LC adapter, the connector of the detector is compatible and designed for ST, SC, FC, LC to the circular and square interference of different optical cables. Easy To Check Fiber Faults: This visual fault locator can accurately detect and locate fiber breaks, as well as problems such as poor connections, fiber bends or cracks. The detector will emit 650nm , and the break or fault in the optical fiber will refract the light to determine the location of the fault. Long distance Output: This visual fault locator output and strong red light can walk kilometers away , and the high efficiency power supply circuit can achieve stable power supply. Powerful Functions: This VFL device is portable and easy to conduct field testing. It has a variety of functions, such as constant output power, low battery warning, long battery life and long distance detection, etc. It is the best tool for engineers. Practical Design: Light weight, pen style design, with a small bag, easy to carry, easy to check optical fiber fault and visual fault locator, designed with stainless steel head and aluminum body to prevent collision and dust, case grounding design effectively prevents electrostatic discharge damage. Specification: Shell material: aluminum alloy Battery type: 2xAA (not included) Interface: 2.5mm universal interface, support FC/SC/ST Output wavelength: 650+-10nm Storage temperature: -40-85°C Size Chart: 2.4cmx17cm/0.94inchx6.69inch Package Includes: 1 Visual Fault Locator 1 Storage Pouch 1 Manual