Question about Gardena Water distributor automatic

The automatic water distributor (irrigation valve) from Gardena does not have an integrated pump. It works mechanically and does not require a power supply, batteries or a pump to automatically control the irrigation of up to six garden areas. A water source with sufficient pressure is required for operation, for example a tap or a separate garden pump, which is not integrated in the device. The device only controls the distribution of water to different irrigation zones, but requires an external water supply.