Watering your garden automatically with a water computer helps you water more efficiently and accurately. Select the day the time of day and the duration and the computer will take care of the rest. They work especially well in conjunction with with micro drip irrigation systems and also sprinklers. If you want to water multiple areas at the same time then look to add the water distributor automatic with the master computer. this means you can water up to 6 different areas at the same time if you have enough water pressure. If you don't have sufficient water pressure then you can water in sequence to solve this problem.