A dual fiber optical CWDM module with an SFP form-factor for 1G Ethernet, compliant with the 1000Base-ZX standard. Designed to operate over single mode fiber (SMF) with a maximum distance of 60km and an optical budget of 17dB, featuring a duplex LC connector and compliance with the SFF-8431 Multisource Agreement (MSA) recommendations. Key technical specifications include a Tx wavelength of 1510nm, DFB laser type, emission power of 0..-5dBm, PIN receiver type, receiver sensitivity of -22dBm, maximum allowable receiver input power of -10dBm, support for hot swapping, LC duplex connector type, and a working temperature range of -5..+70°C.