What is known as Commercial operating temperature range (aka, COM or C-Temp) is 0°C to +70°C. While Fluxlight offers many industrial temperature optical transceivers capable of operating in more extreme environments, for indoor applications with reliable heating/air-conditioning (Data Centers, typical corporate offices, etc.), our lower cost C-Temp parts are more than sufficient. All Fluxlight C-Temp optical modules are guaranteed to support full functionality over the life of the product when deployed in 0°C to +70°C operating environment. For more information feel free to contact our experts at 1-888-874-7574 or by email at: firstname.lastname@example.org.