The working temperature of the optical module has a greater impact on the use of optical modules, if the working temperature of the optical module is too high or too low, there will generally be a decline in optical power, low sensitivity, poor eye diagrams, in. The working temperature of the optical module has a greater impact on the use of optical modules, if the working temperature of the optical module is too high or too low, there will generally be a decline in optical power, low sensitivity, poor eye diagrams, in. The most common optical modules are C-TEMP, and their normal operating temperature ranges from 0 to +70℃. E-Temp ranges from -20℃ to +85℃. In addition, industrial optical. These settings typically maintain temperatures within the 0°C to 70°C range, ensuring optimal performance without the need for specialized equipment. These transceivers suit the controlled environments of data center and network provider equipment rooms. These rooms have active temperature control, cooling systems, filters for dust and other particulates. Operating temperature is a critical parameter that needs to be considered while designing, buying, and deploying optical transceivers.