... , 2 return transmission modules, 4 forward. CSP8500 Optical Working StationSummary4 output, 45/87-862MHz, 2 optical receiving module, 2 retrun path transmitter, ... FC/APC or SC/APC connector,rated output level104dBuV(input optical power -2dBm), outdoor waterproof housing,AC135~250V(power ... Plug-in splitter(tap) in output and plug-in return path module•Models with local and remote powering•HMS network ...