... low capacity, point-to-point application of remote transmission. The equipment is reliable, stable, easy to install and maintain, which ... , 75&120ohm both OK, Optical port: distance:40km, FC/PC, SM1310nm, Standalone, 220VAC power supplyF9-120-04F23A 4E1 port Multiplexer ... Multiplexer, 75&120ohm both OK, Optical port: distance:40km, FC/PC, SM1310nm, Standalone, -48VDC power supplyF9-120-04F23D 4E1 port ...