The R3 Indoor Pro Series Wi-Fi Irrigation Controller (6ZULWC-PRO-BLI, 8ZULWC-PRO-BLI, and 16ZULWC-PRO-BLI) is the fastest and simplest controller solution for a wide range of indoor applications. Use the Rachio app to access and troubleshoot controllers anywhere, set up smart schedules, configure Weather Intelligence Plus, and share access with customers.