I see BRS is offering an Ice Cap module which is applicable to the XF280. I know in an earlier 2017 thread, this wasn't in the making previously. I just wanted to make sure the latest is the module does work in interfacing the XF280 to an external controller.
Unfortunately the GIM on the BRS website is listed incorrectly as being compatible with the 250 or the 280. We still do not have a GIM that will work with the 280 pumps. I apologize.