Fluke FOM
FOM Fiber Optic Meter

Description
The Fluke model FOM is a fiber optic power meter that features:
The compact FOM plugs into your DMM and makes testing in tight spaces easy
A variety of light sources (FOS 850, FOS 1300, and FOS 850/1300) and patch cords (ST to ST, ST to FC, ST to SC, ST to SMA) let you get just what you need for testing different cable types and lengths
Highly accurate readings mean less work, less repeated testing
Input connector: fixed ST
Battery life: 16 hours minimum, 9V alkaline
LED low battery indicator
Operating temperature: 0C to +40C (32F to +104F)
Storage temperature: -20C to +70C (-4F to +158F)