The range of an SFP (Small Form-Factor Pluggable) module can vary depending on the specific type and intended use of the module. SFP modules are commonly used for both multimode and single-mode fiber optics, and the range is influenced by factors such as the fiber type, wavelength, and the specific application. 

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

1. Multimode Fiber SFP:

• Short Range (SR): Typically used for shorter distances, SR SFP modules over multimode fiber can have a range of up to 550 meters.

• Long Range (LR): LR SFP modules over multimode fiber might support distances up to 2 kilometers.

2. Single-Mode Fiber SFP:

• Long Haul (LH) or Long Range (LR): Single-mode fiber SFP modules can support longer distances. LR modules may have a range of up to 10 kilometers.

• Extended Range (ER): ER SFP modules can support even longer distances, often up to 40 kilometers.

• ZX or Ultra Long Range (ULR): ZX or ULR SFP modules can support ranges extending beyond 40 kilometers, possibly up to 80 kilometers or more.

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

When selecting an 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.