Dcon Ag AIR (Controller) MCU & MSU (Motor Controller & Starter Unit) VCN & VCN4 (Valve Control Unit) WL (Water Level Control Unit) ABW (Automatic Backwash Control Unit) SOM (Soil Moisture Monitor Unit) WS (Weather Station Monitor Unit) FRT (Fertigation Control Unit) AC10 Automation Controller Solenoid Valves Pressure Release Valve Pressure Sensor Flow Meter