GE’s digital output modules for the RSTi‑EP system provide 2 to 16 channels for driving discrete devices. They offer variants for sourcing, sinking, or mixed logic and use 1‑wire through 4‑wire connections. Each channel has a status LED and the modules integrate basic diagnostics for voltage and communication errors. Because inductive loads can feed energy back into the module, you’ll need external suppression devices. Current ratings vary from 0.5 A to 2 A per channel, so these modules are adequate for small solenoids and relays but insufficient for larger loads — plan accordingly.