Welcome to the store! 1、650nm semiconductor laser is used as the luminescent device, driven by a constant current source, and the optical interface connection port enters single-fiber (or multi-fiber). 2、By observing the red light overflow point to find the light leakage or bending point and realize optical fiber fault detection function. 3、Thickened aluminum alloy forming, durable and wear-resistant, good oxidation resistance and long-term use. 4、Applicable to various optical fiber interfaces, standard 2.5mm interface, applicable to all FC/ST/SC interfaces. 5、Pulse continuous waves, rapid positioning of fault breakpoints, strong light source and strong penetration ability. 6、It is suitable for optical fiber engineering construction, optical fiber network maintenance, production and research of optical devices, etc. Item Type: Fiber Optic Tester Material: Aluminum Alloy Weight: Approx. 129 g / 4.6 oz Product Model: TL532 (20mW) Red Light Output Power: >20mw Light Source Wavelength: 650nm Use Optical Fiber: SM, MM Maximum Theoretical Test Distance: 1-5 km Power Supply: 2 x AA Battery (Battery Not Included) Red Light Source Continuous Working Time: ≥20 h Working Temperature: 0-60 ℃ Storage Temperature: -20 - +70 ℃ 1 x Fiber Optic Tester (Battery Not Included) 1 x Portable Bag 1 x Manual Your 100% 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 give you the best solution!