Viavi JDSU 81165 B OTDR Module 1650 nm In-Service Filtered E81165B APC 43 dBCondition: New other (see details) New module, used for testing only, compatible with the MTS T BERD 6000 8000 and the OTU 8000 (v2) mainframes (sold separately). Included in the sale: E81165B 1650 nm Live OTDR module 43 dB From the manufacturer: The VIAVI Solutions 8100 Series OTDR EVO family transforms fiber testing. Connect the OTDR EVO family anywhere on the fiber to characterize single mode and multimode fibers for commissioning, network