The fiber tester in a compact design is an excellent tool for daily use of fiber optic applications on site, in industrial environments and in laboratories. Suitable for testing single/multimode fiber optic cables using inversible laser light, faulty fiber optic components, and identifying and patching fibers. - Range approx. 10km, 10mW - Suitable 2.5 mm ferrules: DIN, E2000, FC, SC, ST - incl. adapter 2.5 -> 1.25 mm ferrules for LC and much more. cannot be screwed to the basic device! (only plugged in without locking!) - Delivery includes dust protection cap, nylon case and instructions for use - without batteries (AA 1.5V) - Spare part ceramic socket for the laser (located below the 2.5 output which can be screwed on )