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 is running, water inlet valve is open, flushing valve is open, flushing light is flashing.) Water Production: When water supply is sufficient, the system detects a “not full” signal and enters water production mode. (Pump is running, water inlet valve is open, flushing valve is closed, water production light is flashing.) Water Full: System detects “full” signal and enters water full mode. (Pump stops, water inlet valve closes, flushing valve closes, full water light remains on.) Water Shortage: During flushing or water production, if low water signal is detected, system enters water shortage mode. (Pump stops, inlet valve closes, flushing valve closes, low water light blinks.) Maintenance: If continuous water production exceeds 6 hours, system enters maintenance mode and flushing valve closes. Recovery requires power cycle. (Pump runs, inlet valve opens, flushing valve closes, flushing/water production/low water indicators flash.) Application: Compatible with 400g and lower capacity RO water purifiers. Working Voltage: DC 24V Inlet Water Pressure: Standard tap water pressure Power Consumption: Less than 0.6W Operating Temperature: -20°C to +70°C Operating Humidity: 5%–85% Screen Size: Approx. 71 × 30.2 mm Motherboard Size: Approx. 130 × 61 mm Color: Blue Material: PCB Note: Designed for water purifier storage pump applications, compatible with Water-128 (400g) type water purifier control panels. Package Includes: 1 × Water Purifier Control Board (with English label), 1 × 50 cm flex cable. Note: Only items listed above are included. Other accessories are not included.