The Triplett FiberTest™ VFL is a visual fiber fault locator with a powerful 5mW 650nm laser. This tool performs visual check of fiber optic cables with 3 different test signals; continuous wave, slow pulse, and rapid pulse. It has a universal 2.5mm fitting for testing cables with ST, SC, and FC male connectors and will also identify TOSLINK™ cables. A red "test in progress" LED indicates that the unit is on. A rolling collar prevents the button from accidentally being turned on/off. Transmits up to 6 miles (10km). 1 year warranty. Inludes case and (2) AA batteries. 1.25mm universal fiber adapter (79-815) sold separately.