The Gigabit Fiber SFP Module comes with a personalized steel ring, easy to use, plug and play LC interface for quick connection Thickened gold fingers, zinc alloy shell, 50u gold-plated contacts, high contact stability and effective oxidation High-quality chips with stable performance. Selected new environmentally friendly PCB circuit boards, using MAXIM, Xiamen Youxun, and Ginum solutions, high-energy conversion, stable and smooth DDM monitoring, clear at a glance, detects 5 measurement parameters in real time, can quickly find the fault location and simplify maintenance work Easy to operate and suitable for many occasions, fiber optic switches, fiber optic routers, fiber optic transceivers, data center computer rooms, fiber optic network cards, fiber optic servers Distance: 40KM Wavelength: T1310NM/R1550NM Name: Gigabit Single Fiber Module Rate: 1.25GBPS Interface: LC interface Temperature: 0℃ ~ 70℃ Colour:Silver Material:zinc alloy Package Contents: 2 x Gigabit Fiber SFP Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.