Models: The boxes indicate two distinct voltage options: 12V and 24V.Applications: These pumps are designed for solar-powered systems, intended to connect to a solar panel and a battery for off-grid operation.Performance: Typical specifications include a maximum suction of 5 meters and a flow rate of approximately 2000 liters per hour, with varying maximum head heights depending on the specific model (e.g., 15m to 25m).