S-SFP-GE-LH40-SM1550 Huawei S-SFP-GE-LH40-SM1550 is Optical Transceiver. Its a Single-mode Module. S-SFP-GE-LH40-SM1550 Specification Transceiver form factor eSFP Transmission speed 1 Gbit/s Center wavelength (nm) 1550 Standard compliance 1000base-LX/LH Connector type LC Applicable cable and maximum transmission distance Single-mode fiber: 40 km Transmit power (dBm) -5.0 to 0 Maximum receiver sensitivity (dBm) -22 Overload power (dBm) -3.0 Extinction ratio (dB) 8.5 Operating temperature 0C to 70C (32F to 158F) Net Dimension(D x W x H mm) 110 x 70 x 37 Company