The Cisco GLC-SX-MM-RGD is a 1000BASE-SX SFP optical transceiver module, designed for short-range Gigabit Ethernet networking over multi-mode fiber. Operating at a wavelength of 850nm, it supports transmission distances up to 550 meters on OM2 fiber and up to 1 kilometer on OM3/OM4/OM5 laser-optimized fiber, making it ideal for rugged industrial environments. This hot-swappable module features a Duplex LC connector, supports Digital Optical Monitoring (DOM), and operates across an extended industrial temperature range (-40 to 85°C), ensuring reliable 1Gbps performance in harsh conditions.