The Cisco 1000BASE-LX/LH is an SFP module designed for long-distance fiber optics communication. The module supports transmission speeds of up to 1 Gbps, and it can handle long-distance networks that run up to 10 km.
The GLC-LX-SM-RGD variant is a rugged model of the 1000BASE SFP module, meaning it is designed specifically to work in harsh environments. Great in outdoor settings, manufacturing facilities, and other extreme settings, this module can work nominally under conditions that would break a lesser device.
It is rated for temperature ranges from well below freezing (-40℃) to extremely hot air temperatures (85℃).
Even with its ruggedness, it is still a single-mode module designed to operate at the 1310 nm wavelength and support extremely reliable long-distance fiber signals.
It is also hot-swappable, making it easy to add or remove from a network as needed. This allows for greater network flexibility and reduced labor costs when making network design or equipment adjustments.
All around, it’s a rugged, reliable module.