The JBX02162 is a professional-grade 1000BASE-BX20 SFP transceiver engineered for demanding network environments requiring extended-reach single-mode fiber connectivity. With support for 20km transmission distances, this transceiver eliminates the need for costly repeaters or regenerators in long-haul network segments. **Technical Specifications:** Operating at 1Gbps data rates, the JBX02162 employs advanced bi-directional (BiDi) technology, transmitting at 1310nm and receiving at 1550nm (or vice versa) to maximize efficiency over simplex fiber connections. The transceiver meets SFF-8472 extended-reach specifications and qualifies beyond standard IEEE 802.3ah requirements, ensuring superior performance in challenging deployments. The module features a robust 9/125 single-mode fiber core optimized for long-distance transmission with minimal signal degradation. Its compact 5x4x2mm form factor fits seamlessly into standard SFP slots, and the LC/UPC simplex connector provides secure connections with low back-reflection characteristics. **Compatibility & Integration:** As a direct Cisco GLC-BX35-U20 compatible replacement, installation is straightforward with plug-and-play compatibility. The transceiver supports custom brand programming, allowing integration into proprietary systems and OEM solutions. Operating temperature range of 0-70°C ensures reliable performance across diverse environmental conditions. **Safety & Compliance:** Manufactured with safety certifications including Class 1 Laser, TUV, UL/FDA 21CFR 1040.10, and LN #50 7/2001 compliance. Full RoHS (EU directive 2002/95/EC) and ELV compliance ensures environmental responsibility and regulatory adherence. **Reliability & Support:** Backed by a 90-day limited warranty, this transceiver provides peace-of-mind protection. Ships from multiple US locations (Danville, CA and Beaufort, SC) with free standard shipping on qualifying orders. Ideal for network administrators, system integrators, and IT professionals implementing enterprise-class fiber infrastructure requiring extended distances without signal regeneration.