Hello there! If you’re looking to replace your System Sensor SW, both SWL and SWL-BP10 are suitable replacements. SWL is a direct replacement and should work seamlessly if you want to stick with the same model. However, if you’re looking for an upgrade, SWL-BP10 offers additional features and improved performance. It might be a better choice if you want enhanced functionality. Feel free to let us know if you need more specific information about either model!