Fiberinthebox provide cost-effective standards-based CWDM XENPAK Transceivers. These CWDM XENPAK modules are designed for 10 gigabit Ethernet at 1470-1610nm wavelengths, with each step 20nm. They can support a link length of 40km up to 80km transmission on single-mode fiber. As a third party OEM manufacturer, our CWDM XENPAK Transceiver modules are delivered to worldwide from our factory directly. All of our CWDM XENPAK optical transceivers are tested in-house prior to shipment to guarantee that they will arrive in perfect physical and working condition.