Meet the Netro Whisperer: a smart plant sensor with WiFi that collects soil moisture, ambient temperature, and sunlight information to give you key insights into the health of your plants. It is solar powered and UV resistant. It connects to your network and makes the data accessible on iOS & Android devices.
This sensor works standalone but also pairs with Netro smart sprinkler controllers and faucet timers to help you conserve water.[where to get it]