Color LED Display, Built-in Sound Prompts, Fully Intelligent Flushing, Water Control, Automatic Fault Alarm, Short-Term Automatic Protection. Flushing: 18 seconds before each water production; 8 seconds every 2 hours during water production (pump operating, water inlet valve open, flushing valve open, flushing light flashing). Water Production: When water supply is sufficient, the system detects a “not full” signal and enters water production mode (pump operating, water inlet valve open, flushing valve closed, water production light flashing). Water Full: System detects “full” signal and enters water full mode (pump stops, water inlet valve closes, flushing valve closes, full water light stays on). Water Shortage: During flushing or water production, if a water shortage signal is detected, the system enters water shortage mode (pump stops, inlet valve closes, flushing valve closes, low water light blinking). Maintenance: If continuous water production exceeds 6 hours, the system enters maintenance mode and the flushing valve closes. Recovery requires power cycle (pump operating, water inlet valve open, flushing valve closed, flushing/water production/shortage indicators flashing). Application: Compatible with 400g and lower capacity RO water purifiers. Working Voltage: DC 24V Inlet Water Pressure: Standard municipal tap water pressure Power Consumption: Less than 0.6W Operating Temperature: -20°C to +70°C Operating Humidity: 5%–85% Display Size: Approx. 71 × 30.2 mm Motherboard Size: Approx. 130 × 61 mm Color: Blue Material: PCB Note: Control board designed for RO water purifier storage pumps, compatible with Water-128 (400g) type systems. Package Contents: As shown