24-Point BACnet B-AAC programmable controller for control and monitoring of small plant or HVAC equipment. Controller features 8 UniPutsTM with Relay outputs (software configured for AI, AO, DI or DO-R (Relay), 8 UI and 8 UniPutsTM (software configured for AI, AO, DI, or DO (using AO with external relay). Maximum of 1024 strategy blocks.