The JBX02180 1000BASE-BX40-D SFP transceiver represents a cost-effective solution for organizations requiring long-distance single-fiber connectivity. This extended-reach bidirectional module leverages proven 1000BASE-BX technology to deliver 1GB Ethernet performance across 40 kilometers of standard single-mode fiber infrastructure. **Technical Specifications:** The module operates at 1550nm transmission and 1310nm reception wavelengths, enabling full-duplex bidirectional communication on a single fiber pair. With a 9/125 micron fiber core and simplex LC/UPC connection interface, installation integrates seamlessly into existing fiber networks. Compliance with SFF-8472 specifications and extended-reach BiDi IEEE 802.3ah standards ensures interoperability with industry-standard equipment. **Key Features & Benefits:** - **Extended Range:** 40km reach eliminates costly intermediate repeaters - **Single Fiber Operation:** BiDi design maximizes existing fiber utilization - **Cisco Compatible:** Direct replacement for GLC-BX53-D40 modules - **Compact Form Factor:** Standard SFP size fits any compatible transceiver slot - **Enterprise Compliance:** RoHS, Class 1 Laser, TUV, UL/FDA certifications - **Metal Construction:** Durable housing protects precision optics **Ideal Applications:** - Metropolitan area network (MAN) backbone connections - Campus-to-campus data center links - Long-distance Ethernet extension - Telecommunications carrier networks - Financial institution inter-office connectivity **Compatibility & Integration:** Designed as a drop-in replacement for Cisco GLC-BX53-D40 modules, this transceiver supports existing network infrastructure investments. Custom brand programming is available for organizations requiring OEM labeling. Ships from multiple US locations (Danville, CA and Beaufort, SC) with free standard shipping on qualifying orders. **Operating Specifications:** Temperature range of 0-70°C ensures reliable performance in standard data center and network cabinet environments. The 90-day limited warranty provides peace-of-mind protection, with option to extend coverage through our support programs.