Features PORTABLE DESIGN: The fiber optic fault finder adopts ergonomic design, making it comfortable to hold, lightweight and portable, convenient to use anytime and anywhere. OPERATING PRINCIPLE: Powered by constant current source, connected to the optical interface to enter the multimode and single-mode fiber to realize fiber fault detection. POWER SUPPLY: Supports multiple power methods such as alkaline battery, power bank, computer and adapter, which is convenient and convenient. LIGHTING FUNCTION: The fiber fault detector has lighting function, convenient to check the line and build on the field, in the engine room, at night and in any other dark environment. APPLICABLE FIELDS: This portable fiber detector is widely used in fiber technical construction, fiber optic network maintenance, production and research of optical devices, etc. Specification: Item Type: Fiber Fault Locator Test distance: 20 KM Working current: ≤160mA Battery life: >5 hours Speed output: 3 speed adjustment Output wavelength: 650nm Interface Type: 2.5mm Universal Adapter Power supply: 2 x AAA batteries (battery not included) Storage temperature: -40-85°C Operating temperature: -20-60℃ (non-condensing) Package List: 1 x Fiber Defect Locator 1 x Ceramic Sleeve 1 x User Manual Package List 1 x Fiber Fault Locator 1 x Ceramic Sleeve 1 x User Manual