The PM-4212 is a 4 port portable optical power meter. The small size does not prevent the optical power meter fulfilling the operational requirements of a full size tester.
The power meter is designed for simultaneous measurement of up to 4 single mode or multimode fibers. All four input interfaces are fitted with 1mm InGaAs photo detectors, with changeable ADP adapters for a wide range of single mode and multimode fiber connectors.