The PM-4212-SI3 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 multimode fibers. All four input interfaces are fitted with 3.6 mm Si photo detectors, each with a 13 mm2 working area and with changeable TE-ASP adapters for a wide range of MM fiber connectors.