The BD-55M2-L8x(D) from Shanghai Baudcom Communication Device is a Fiber Optic Transceiver with Data Rate 155 Mb/s to 2.67 Gb/s, Wavelength 1430 to 1580 nm (Tx), 1260 to 1580 nm (Rx), Distance/Reach 80 km, Output Power -2 to 3 dBm, Receiver Sensitivity -28 dBm. More details for BD-55M2-L8x(D) can be seen below.