Meet the RainPoint WiFi Soil Moisture Meter: a smart gadget that helps you analyze soil moisture and temperature with 3 probes. It has a range of 0 to 100% with 5% accuracy. Thanks to RainPoint, you can figure out when to make adjustments to help your plants grow.
The RainPoint has 5 LED lights to give you feedback but you can also read the data on your smartphone. It is IP67 waterproof and runs for a year on 3 x AAA batteries.