Raritan Engineering STC548W Smart Toilet Control Circuit Board

The Raritan Engineering Smart Toilet Control Circuit Board (STC548W) is an intelligent electronic controller designed to optimize water usage in marine toilet systems without compromising flush performance. This programmable control module manages all aspects of the flushing cycle for maximum efficiency.

Key Features:

• Automatic flushing cycle initiation via normal or water-saver button modes
• Water-only button brings inlet water to bowl (8-second time limit)
• Empty-only button evacuates bowl contents (8-second time limit)
• Fully programmable flush timing for initial fill, discharge, and final fill sequences
• Integrated holding tank full status indicator with LED display
• Automatic button disabling when holding tank is full (water-only and empty buttons remain functional)
• Reverse polarity protection prevents damage from incorrect wiring
• Complete control system includes controller, control panel, and 7-foot connecting cable

The STC548W provides precise control over marine toilet operation, helping to conserve fresh water while maintaining effective waste removal. The programmable timing features allow customization for specific installation requirements. In the event of reverse polarity connection, motors and solenoids will activate immediately as a warning; normal operation resumes once polarity is corrected within 10 minutes.