| 摘要 |
An irrigation controller modifies sophisticated irrigation protocols using an extremely simple user control. In one aspect of a particularly preferred class of embodiments, the user control includes a simple "more/less" (increase/decrease) adjustment In another aspect of preferred embodiments, the controller automatically determines appropriate irrigation amounts, start times, durations, and frequencies. Such automatic determination may advantageously be based in part on the more/less adjustment, and in part on an external signal, such as that transmitted by a radio transmitter.
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