The BDP-313G-L2x(D) from Shanghai Baudcom Communication Device is a Fiber Optic Transceiver with Data Rate 3 Gb/s, Wavelength 1260 to 1360 nm (Tx), 1260 to 1580 nm (Rx), Distance/Reach 20 km, Output Power -5 to 0 dBm, Receiver Sensitivity -18 dBm. More details for BDP-313G-L2x(D) can be seen below.