Welcome to the store! 3-GEAR POWER: The brightness of this visual fault locator can be adjusted according to actual testing needs, with 3 gears for cycling and energy saving. HIDDEN DESIGN: Adopts a hidden laser head design that opens when the VFL tester is turned on and retracts when turned off, ensuring a longer lifespan. REPLACEABLE CERAMIC CORE: The ceramic core features a replaceable design, effectively extending the lifespan of this fiber red light pen. UNIVERSAL INTERFACE: This fiber optic source tester uses a 2.5mm universal interface, supporting SC, FC, and ST fiber optic interfaces to meet various testing needs. EASY TO USE: This fiber optic cable tester is compact and portable, easy to carry, with an ergonomic body design for a more comfortable grip. Item Type: Fiber Optic Visual Fault Locator Material: ABS Output Distance: 15KM Working Current: ≤150mA Battery Life: >3.5h Charging Time: ≤3h Charging Current: ≤300mA Charging Voltage: 5V Static Current: ≤15uA Gear Output: 3 adjustable gears Output Wavelength: 650nm Interface Type: 2.5mm universal adapter Working Temperature: -20℃ to +60℃ (without condensation) Storage Temperature: -40℃ to +85℃ Power Type: Rechargeable lithium battery 400mAh x 1 (built-in) Package Includes: 1 x Fiber Optic Visual Fault Locator 1 x Ceramic Sleeve 1 x Data Cable 1 x Instructions Your satisfaction is our top priority. We will provide you with the best service. If you encounter any problems after receiving the product, such as damage or incorrect quantity, please contact us immediately, and we will provide you with the best solution!