Feature: 1. Main Application: This tester is used to locate defects on cables and wires, search for fiber breakage. 2. Pen Type: This tester is designed in a pen type that it is easy to handle and not easy to slip, very convenient using 3. Non Contact Detection: This tester features a non contact detection that the end faces of optical fiber and transmitter will not be damaged, rest assured to use it 4. Anti Interference: This tester features strong anti interference ability, the output power will not be affected by voltage fluctuation. 5. Portable: Comes with a small size and lightweight as well, you can easily take this tester with you to help with your work. Specification: Item Type: Visual Fault Locator Mode: AUA H50 Material: Aluminum Alloy Output Power: Greater than 50MW Output Distance: 50KM Output Wavelength: 650 ± 10nm Operating Temperature: 0 to +60℃ Storage Temperature: - 20 to +70℃ Battery Type: 1.5v AA battery x 2 (shipped without battery) Item Type: Cleaning Pen Material: Anti Static Resin Cleaning Times: Greater than 800 times Cleaning Capacity: 99% Application Range: Approx. 2.5mm / 0.1in(SC, FC, ST). Package List: 1 x Visual Fault Locator1 x Pen Bag1 x Lanyard 1 x Ceramic Core 1 x Manual 1 x SC Cleaning Pen