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Digital plant moisture sensor that blinks an LED to alert the user when it is time to water a potted plant. Designed to be unobtrusive when left in the soil of a plant where it continuously monitors conditions testing the moisture level once per second. It can sense 5 different levels of dryness causing the light to blink faster as the soil gets dryer. When it reaches the fifth level "completely dry" the device goes into standby mode to conserve electricity emitting a double blink every 3 seconds. There is a low-battery mode as well: a slow triple blink. Includes a comprehensive and informative user and watering guide.