Here's a simple way to monitor when your potted plants need water and – just as important – when they don’t.
Left in the soil, the probe continuously checks the moisture content, alerting you to low levels with a blinking red LED.
As the soil dries, the rate of blinking increases to indicate urgency. The straight sensor is for most pots and planters; the curved sensor is designed for use in hanging baskets and other overhead containers.
The included button-cell battery is good for about 6 months of use; a double flash tells you when it requires replacement.