Rachio 3 Smart Sprinkler Controller 12-Zone Download the Rachio app to care for your lawn remotely with your smartphone. With premium Weather Intelligence Plus technology never get caught watering in the rain wind or snow. Set your own schedules or input details like plant type and sun exposure to let Rachio automatically water your lawn with exactly what it needs to thrive. Reduce your water bill by up to 50% while keeping your garden healthy.