Product UPC: 691852464784 The EX-SFP-1FE-LX40K is a third-party compatible SFP for Juniper, manufactured and tested by Network Distributors. This 100BASE module will reach 40km and uses a wavelength of 1310nm. All EX-SFP-1FE-LX40K are in-system tested in real Juniper routers and switches.