Upgrade Garden Sprinkler Automatic 360 Degree Rotating Irrigation Grass Water Sprinkler System Lawn Sprinkler <p>Upgrade 36 Unit Spray - Lawn sprinkler with 3 adjustable spray patterns per arm. The garden sprinkler provides powerful irrigation and you can adjust different spray patterns based on the desired spray coverage.</p> <p>Immense Coverage Distance - Lawn sprinklers require 28.4 PSI of water pressure to operate (range 9.9-15.1 meters at 80 PSI water pressure). Higher water pressure provides a greater spray range based on different spray patterns. Under 80 PSI, up to 9.9 meters with 5 holes per arm; up to 13.1 meters with 4 units per arm; up to 15.1 meters with 3 units per arm. The garden sprinkler can be used in series for greater coverage. (Tip: Connect the sprinklers in series to increase the water pressure.) 360-degree rotating, effective water sprinkler - garden sprinklers can rotate 360 ​​degrees to water. The sprinkler is sturdily built with strong ABS plastic for high durability and stability. A great garden hose sprinkler for garden or children's entertainment. Easy to use and compatible with 2 hose types. Garden sprinklers come with a quick connector for use with your traditional rubber hose. If your hose has a threaded connection, simply connect the garden sprinklers directly. Purchase Notes: Once the sprinkler is assembled, do not overtighten the spray nozzle onto the base and ensure the water pressure is at least 28.4 PSI. Check that the spray nozzle patterns on the rotating arms are in the correct position before starting operation (you will hear a clicking sound, which means it is correct). Increase the water pressure if using the sprinkler in series. If you experience any problems with your lawn sprinkler, please contact your local sprinkler store.