Check Point CPAC-TR-40LR-SSM160-QSFP Compatible 40GBASE-LR4 QSFP+ Optical Transceiver Module (SMF, 1310nm, 10km, LC, DOM).
While the 40GBase-SR4 is used for short distance transmission, the 40GBase-LR4, on the other hand, is for long range transmission of data. Though they use the same multi-lane technology, the LR4 differs in that instead of using a single fiber strand for each lane, it multiplexes all four sending lanes onto one fiber strand and all four receiving lanes onto another single fiber strand. This transceiver type supports link lengths of up to 10kms via a single-mode fiber cable with duplex LC connectors.
Specifications
| Form
  Factor | QSFP+ | Data Rate | 40Gbps | 
| Wavelength | 1310nm
   | Max
  Cable Distance  | 10km | 
| Connector | Duplex
  LC | Media | SMF | 
| Transmitter
  Type | DFB
  CWDM | Receiver
  Type | PIN | 
| TX
  Power | -7~2.3dBm | Receiver
  Sensitivity | <-11dBm | 
| Powerbudget | 4dB | Receiver
  Overload | 2.3dBm | 
| Power
  Consumption | ≤3.5W | Extinction
  Ratio | >3.5dB | 
| Host
  FEC | Supported | Bit
  Error Ratio (BER) | 1E-12 | 
| Commercial
  Temperature Range | 0 to
  70°C (32 to 158°F) | Protocols | OTN
  OTU3, 40G Ethernet, Fiber Channel, SATA/SAS3, MSA Compliant | 

 
				 
                                                                                                                                                         
                                                                                                                                                         
                                                                                                                                                         
                                                                                                                                                         
                                                                                                                                                        