The Einhell GE-PP 18 RB Li garden pump delivers a maximum water pressure of 2.0 bar. Gardena recommends a water pressure of at least 1.5 bar for operating an AquaZoom S (square sprinkler); 2.0-3.0 bar is optimal. The pump can generally operate the sprinkler, but the maximum range and width is not always fully achieved at 2.0 bar, especially with longer hoses or higher consumption. Operation is possible for small to medium-sized areas, but for large areas or maximum coverage, the pressure may be insufficient.

As the official specifications from Gardena do not explicitly state a minimum pressure for the AquaZoom S, but 2.0 bar is the lower limit for many sprinklers, operation with the pump mentioned is possible, but not always optimal.

I am not entirely sure whether the maximum range and width are always achieved, as the information does not fully address this situation. For optimal use, we recommend testing in your own garden.