The range of a 1310nm SFP (Small Form-Factor Pluggable) module can vary depending on the specific type and intended use of the module, as well as the type of fiber optic cable being used. SFP modules operating at 1310nm are often used for both single-mode and multimode fiber optics, and the range is influenced by factors such as fiber type, wavelength, and the specific application. 

Here are some general guidelines for the range of 1310nm SFP modules:

1. Multimode Fiber 1310nm SFP:

• Multimode fiber SFP modules operating at 1310nm are typically used for shorter distances. The range for multimode 1310nm SFPs is commonly up to 2 kilometers.

2. Single-Mode Fiber 1310nm SFP:

• Single-mode fiber SFP modules operating at 1310nm can support longer distances. The range for single-mode 1310nm SFPs can be up to 10 kilometers or more, depending on the module specifications.

It's important to note that these are general guidelines, and the actual range can vary based on the specific specifications of the SFP module, the quality of the fiber optic cable, and environmental factors. Different manufacturers may have variations in the performance and range of their SFP modules.

When selecting a 1310nm SFP module for a specific application, it's crucial to consult the datasheet and specifications provided by the manufacturer. The datasheet will provide detailed information about the module's supported distances, fiber type compatibility, and other relevant parameters.