The 100-02161 for Calix is an optical transceiver module from TenFourOptics. Plug-and-play, no configuration required. Key specifications: DWDM. Type: DWDM Backed by the GreenLights4Life® Limited Lifetime Replacement Warranty. In-stock items ship same or next business day — contact 10.4@tenfouroptics.com to confirm availability and lead time.