The Fluke FOM Fiber Optic Meter is a versatile tool designed for testing and maintaining fiber optic cable systems. It eliminates the need for a complete new meter by connecting directly to a DMM with a mV DC function and a 10 MΩ input impedance. This enables quick and accurate verification of fiber optic cable system loss, making it a valuable asset for technicians and engineers. Light sources and patch cords are required and sold separately.