Features: This reverse power over ethernet fiber opt converter supports single mode single fiber technology for bidirectional data transmission over distances up to 20KM, ideal for efficient long ranges networking connection and remote power delivery. Featuring 4 RJ45 ports for versatile device integration and reverse power over ethernet functionality to power end devices via fiber, plugs play enhances stability and heat dissipation. Ideal for networking administrators, security professional, and IT engineers deploying security systems or communication networking in expansive environments requiring reliabled performanced. Perfect for scenarios like remote video monitoring, industrial installations, and large scale networking infrastructures where stable long distance data transmission is critical. Crafted with ABS and a robusted design, durability operating in diverse conditions, delivering consistent connectivity without complex setup. Specifications: Component: ABS. Dimensions: 10x6cm. Weight: 80g. Emission wavelengths: 1310/1550nm. Transmit power: -8-3dbm). Voltages input: DC5V Package Includes: 1PC 20KM fiber opt converter note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.