The 10G-SFP-1550ER from 3Coptics is a Fiber Optic Transceiver with Data Rate 10 Gb/s, Wavelength 1550 nm (EML), Distance/Reach 40 km (Reach), Output Power -3 to 3 dBm, Receiver Sensitivity -15.8 dBm. More details for 10G-SFP-1550ER can be seen below.