Welcome to our shop! 1、MAIN APPLICATION: This pen-type visual fault locator is specially designed for locating defects in optical cables and circuits, visually searching for fiber breaks, and performing maintenance. 2、IDEAL HELPER: Small size, lightweight, energy-saving, and stable output power make this a great tool for fiber optic testing. 3、NON-CONTACT DETECTION: Features non-contact connection, non-destructive fiber optics, and transmitter end face. Output power is unaffected by voltage fluctuations. 4、ALUMINUM ALLOY MATERIAL: Made from premium aluminum alloy, this fiber fault locator is strong yet lightweight, with rapid heat dissipation for long-lasting, stable use. 5、EASY TO USE: Simple operation combined with a 30km testing range significantly simplifies testing and greatly improves work efficiency. Item Type: Visual Fault Locator Material: Aluminum Alloy Fiber Optic Adapter: Universal Connector Output Distance: Approx. 30000m / 98425.2ft Output Wavelength: 650 ± 10nm Operating Temperature: 0 to +60 ℃ Storage Temperature: -20 to +70 ℃ Battery Type: Requires AA battery x 2 (not included) Package Includes: 1 x Red Light Pen 1 x Manual 1 x Ceramic Core 1 x Adapter 1 x Red Light Pen Case 1 x Lanyard Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!