The Acterna OMK-6 is a Single mode Fiber Optic Test Kit consisting of a a dual wavelength OLS-6 Light Source (1310/1550 nm) and an OLP-6 Optical Power Meter. The OMK-6 is ideal for power and loss measurements in multimode fiber optic cables. The OMK-6 features low power consumption, battery-powered instruments contained in a robust case with all needed accessories and cables for test. At only 5 pounds weight, the OMK-6 is perfect for on-site and field applications.