Welcome to our store! 1. Main Application: This tester is used to locate defects on cables and wires, search for fiber breaks. 2. Pen Type: This tester is designed in a pen shape that is easy to handle and not easy to slip, very convenient to use! 3. Non-Contact Detection: This tester features non-contact detection so the end faces of optical fiber and transmitters will not be damaged, rest assured to use it! 4. Anti-interference: This tester has strong anti-interference capability, the output power will not be affected by voltage fluctuations. 5. Portable: Comes with a small size and light weight too, you can easily bring this tester with you to help with your work. Item Type: Visual Fault Locator Model: 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 Scope: Approx. 2.5 mm / 0.1 inch (SC, FC, ST) 1 x Visual Fault Locator 1 x Pen Bag 1 x Lanyard 1 x Ceramic Core 1 x Manual 1 x SC Cleaning Pen Satisfaction Guarantee: Customers are our top priority. If you find any problem with the product, please contact the seller immediately. We strive to provide satisfactory customer service.