Huawei OSG040N02 1.25G-1310nm-40km-SM-ESFP Transceiver Module *Model Number: MXPD-243S *Module Type: SFP *Transmission Distance: 40km *Transmission Wavelength: 1310NM *Interface Type: Dual LC interface *Transmission Rate: 1.25G/bs *Digital diagnosis: With DDM *Environmental grade: Commercial grade 0C~+70C Industrial grade -40C~+85C