Monitor The Environment - Periodically collects the soil moisture, ambient temperature and sunlight condition, the key factors that affect plant growth Completely Wireless - Connects to WiFi 2.4G directly. Data accessible anywhere from iOS(8.3+)/Android(5.0+) devices Designed For Outdoor - Solar powered, UV-resistant exterior with weather-resistant designs Netro Integration - Works as a standalone plant sensor or pairing with Netro Sprite/Spark (one sensor pairs with up to 3 zones) and Pixie smart watering devices Netro Whisperer is a solar powered smart plant sensor that remotely monitors the soil moisture, ambient temperature and sunlight condition for your lawn and plants. It can work as a standalone monitor that sends watering notifications to your phone. It also works with Netro smart sprinkler controllers or hose faucet timers for moisture-based automatic watering.