The FWR-8235A from Fullwell Optoelectronic is a Fiber Optic Receiver with Data Rate 0.100 to 4.25 GBPS, Detector Sensitivity -16 to -18 dBm, Optical Power -7 to 2 dBm, Wavelength Range 1100 to 1600 nm, Supply Voltage 3 to 3.6 V. More details for FWR-8235A can be seen below.