The Smart Watering System
WaterEase Timer and Moisture Sensor
A programmable sprinkler can irrigate a lawn, but without brains, it can just as handily overwater it, too. Thread the WaterEase Timer and Moisture Sensor onto your spigot and plunge its moisture sensor into a patch of lawn, a flower bed, or a vegetable garden up to 16 feet away. When the soil's water level drops, the sensor signals a sprinkler or soaker hose to run until the moisture level is corrected. [$70; gardeners.com]
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