Visual Fault Locator TW3105 Pen Type Visual Fault Locator is specially designed for field personnel who need an efficient and economical tool for fiber tracing, fiber routing and continuity checking in optical network. It includes: Finding the breakpoint, poor connections, bending or cracking in fiber optic cables. Finding the faults of OTDR dead zone End-to-end visual fiber identification Features: 2.5mm universal connector, for 1.25mm connectors, FC (Male)-LC (Female) adapter can be provided on requests. Operates either in CW or Pulsed Constant output power Lower Battery warning Long battery life (up to 60 hours) Crash-proof and dust-proof design for laser head Laser case ground design prevents ESD damage Burning testing to ensure the reliability. Portable and rugged, easy to use Guarantee to CE standards include EMC, EMI, ROHS