Feature: 1. Smart Testing: The visual fault locator can test optical fibre breakage and bending as well as achieving end to end fibre identification. 2. Broad Utility: Allows for broad application on telecommunication, CATV engineering and maintenance, integrated wiring construction, etc. 3. Reliable Work: Non contact connection guarantees no damage, and the output power is not likely to be affected by the voltage fluctuations. 4. Simpler Using: Simple operation together with 10km output distance largely simplifies the testing and greatly improves working efficiency. 5. Easy Carrying: Powered by 2pcs AA battery, which are not included, the lightweight and compact red light pen is simple to carry and store. Specification: Item Type: Visual Fault Locator Model: HT-10 Material: Aluminum Universal Interface: Approx. 2.5mm / 0.1in, FC, SC, ST。 Output Wavelength: 650nm ± 10nm Output Optical Power: > 10MW Optical Fiber Adapter: Universal connector. Output Distance: Approx. 10km / 32808.4ft Operating Temperature: 0 ~ +60℃ Storage Temperature: -20 ~ +70℃ Battery Type: 2 x 1.5vAA battery, shipped without battery. . Package List: 1 x Visual Fault Locator1 x Pen Bag1 x Lanyard1 x User Manual