Transmitter / Receiver Modules 2 x 8 pins and 2 x 10 pins Transmitter / Receiver Modules Multimode MM 155M Transmitter-Receiver (Nov 2019) MM 225M 1300nm LED RX (Feb 20) MM 225M 1300nm LED TX (Feb 20) MM 1.25G Transmitter-Receiver May 14 MM 622M Transmitter-Receiver May 14Singlemode SM 155M Transmitter-Receiver (Nov 19) SM 1.25G Transmitter-Receiver May 14 SM 2.5G Transmitter-Receiver May 14 SM 266M Transmitter-Receiver Feb 09 SM 622M Transmitter-Receiver May 14