SFP optical modules
Teltonika 1.25 Gb/s BiDi SFP Transceiver, SM, 20km, (1 pair)
Teltonika PR4LC21K is a set of single-mode 1G SFP WDM modules for data transmission using a single fiber with one LC connector. The wavelength (Tx and Rx) of these modules is 1310 and 1550nm, making them suitable for connections up to 20km
Teltonika 1.25 Gbps SR SFP TX Transceiver, MM, 850nm, 550m
Teltonika PR4DU22K is a 1.25G SFP module with an 850nm wavelength, two LC connectors, and a maximum distance of 550m over multimode optical fiber.