The JBX02147 1000BASE-BX120 SFP transceiver represents a superior solution for organizations requiring extended-reach optical networking capabilities. This module is specifically engineered to deliver reliable gigabit Ethernet transmission across distances up to 120 kilometers over single-mode fiber, enabling seamless long-distance data center interconnects, metro networking, and enterprise-grade communications infrastructure. **Advanced Technical Specifications:** Built with precision engineering, this transceiver utilizes a metal case housing with integrated laser transmitter technology. The module operates on a 1550/1490nm bidirectional wavelength configuration, allowing simultaneous transmission and reception across a single fiber strand using simplex LC/UPC connectors. With a 9/125 single-mode fiber core, the transceiver achieves optimal signal integrity and minimal attenuation over extended distances. **Compatibility and Integration:** Direct replacement for Arista SFP-1G-BXD120 components, this module integrates seamlessly into existing Arista networking ecosystems. The standard SFP form factor ensures compatibility with virtually all SFP-equipped switches, routers, and network appliances. Full compliance with SFF-8472 specifications and IEEE 802.3ah extended-reach standards guarantees interoperability across diverse network environments. **Safety and Compliance:** This transceiver exceeds industry safety standards with Class 1 laser certification, UL/FDA compliance (21CFR 1040.10), and TUV validation. Full RoHS and EU directive 2002/95/EC compliance ensures environmentally responsible manufacturing without compromising performance or durability. **Performance Characteristics:** Designed for demanding networking applications, the module maintains stable operation across a 0-70°C temperature range, supporting both indoor data centers and outdoor network installations. The compact 5x4x2 inch form factor maximizes rack space efficiency while delivering industrial-grade reliability. **Ideal Applications:** • Data center-to-data center replication and backup • Metro area network (MAN) deployments • Campus network backbone connectivity • Disaster recovery site linking • Long-distance ISP and carrier networks • Enterprise wide-area network (WAN) infrastructure **Backed by Confidence:** Included 90-day limited warranty provides peace of mind, with free standard shipping on orders over $99. Custom brand programming available for enterprise deployments. Manufactured to exacting standards in Vietnam and China, this transceiver delivers reliable, cost-effective optical networking without compromise. Invest in proven, standards-based optical networking technology that scales with your infrastructure requirements.