ACU Controller Doesn't Show DSP Modules as DSP-1 or DSP-2 Scott Gray February 24, 2022 19:41 Updated DSP-1 and DSP-2 modules show up as simply "DSP" modules in the ACU Controller software. Related articles Can I still get support for my ACU-1000? Interop Product Application Notes Discontinued Product Documentation Discontinued Product Firmware Why are my DSP-2 modules not making a network connection?