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Description of your requirements:
| MPN | SFP-GIG-27CWD40 | 
| Empowerfiber PN | SFP-GIG-27CWD40_tr1060 | 
| Form Factor | SFP | 
| Wavelength | 1270nm | 
| Interface | LC duplex | 
| Max Distance | 40km | 
| Optical Components | DFB CWDM | 
| Cable Type | SMF | 
| DDM support | Yes | 
| TX power | -5~0dBm | 
| Receiver Sensitivity | < -24dBm | 
| Compatible brand | Alcatel-Lucent | 
