The Teltonika PR4LC21K is a high-performance 1.25 Gb/s BiDi (bidirectional) SFP optical transceiver specially designed for long-distance single-mode fiber connections. Utilizing Wavelength Division Multiplexing (WDM) technology, this module transmits and receives data on a single fiber strand via wavelengths of 1310 nm (Tx) and 1550 nm (Rx), ideal for efficient fiber infrastructure utilization.

Key advantages include:

• Support for data links up to 20 km over standard G.652 single-mode fiber


• Compact LC simplex connector for simple integration


• Robust industrial-grade metal enclosure ensures low electromagnetic interference (EMI) and enhanced electrostatic discharge (ESD) protection


• Ultra-low power consumption of under 0.8 W, minimizing energy costs


• Extended industrial operating temperature range from -40 °C to +85 °C, making it suitable for harsh environments


• Fully compliant with RoHS and REACH hazardous substances regulations

For detailed technical information, refer to the official datasheet provided by Teltonika Networks.

Warranty: 24 months (varies by distributor)

Use Cases: Industrial networks, telecom infrastructure, fiber-optic link optimization, harsh environment connectivity.