Saving you the trouble of daily spraying, the water valve (connecting between your hose and a sprinkler setup) communicates with the sensor to disperse precisely the right amount of water at the precisely right time. And when mother nature decides to take over? Already taken care of as it also factors in weather forecasts. Basically, you can't screw this up.
Joe McGauley is a senior editor at Supercompressor. You shouldn't trust him to water your plants when you're on vacation.