WDM / BiDi (one fiber). Tx:1270nm/Rx:1330nm Tx:1330nm/Rx:1270nm. Digital Output Monitoring (DDM, DOM, DDMi). Commercial: 0 to 70°C (32 to 158°F). Therefore, we sell and specify the price for a pair of modules (2 modules).If you need temperature range. Industrial: -40°C to +85°C (-40°F to 185°F). Please inquire to us before pay. Initially, modules have firmware compatible with Cisco. If you need modules are compatible with equipment from other brands: 3com, Alcatel, Allied, Arista, Aruba, AT, Avaya, Brocade, Cisco, Ciena, Dell, Extreme, Edge-Core, Finisar, Foundry, Fujitsu, H3C, HPE, HP Procurve, Huawei, Juniper, IBM, Intel, Linksys, Moxa, Netgear, Nortel, Planet, SMC, Tp-Link, Trendnet, ZyXEL, etc.. Programmer boards GBIC, SFP, SFP+, XFP, X2, XENPAK, QSFP. The item "40km SFP+ WDM BiDi 10G 10gb SFPPlus 40 km transceiver Cisco compatible 2 modules" is in sale since Friday, December 16, 2016. This item is in the category "Computers/Tablets & Networking\Enterprise Networking, Servers\Switches & Hubs\Switch Modules". The seller is "dimiks-pte-ltd" and is located in Traverse City. This item can be shipped worldwide.