Karvinger - Rechargeable Visual Fault Locator 30mW 30km with Case - VFL Tester with FC Male to LC Female Adapter - 8h Battery Life Red Light Laser for Fiber Network Cable Test:
High Power fiber VFL laser VFL 10,15,20,25,30 mw optional up to 30km - AliExpress
Visual Fault Locator 30MW, HPOYUELC,30KM VFL Fiber Light Tester Meter, Fiber Red Light Source, Suitable for FC/SC/ST/LC Universal Connector, with FC Male to LC Female Adapter.: Amazon.com: Industrial & Scientific