Fluke Networks SFMULTIMODESOURCE SimpliFiber Multimode 850/1300 Light Source verifies and troubleshoots optical fiber cabling systems, measure loss and power levels, and inspect and clean connector end-faces. Replacing the popular SimpliFiber series, these next generation optical loss power meters boast industry-leading functions such as dual-wavelength testing and automatic-wavelength detection, in addition to unique features such as CheckActive, FindFiber, and Min/Max. With such advanced, yet easy-to-use, capabilities that reduce test times, SimpliFiber Pro is simply the best first-line fiber test kit on the market.