Avoid the valve box with the battery-operated NODE-BT controller! NODE-BT is enabled with powerful wireless Bluetooth® technology that can be easily managed from a smartphone. Install the waterproof NODE-BT in gardens, parks, medians, roundabouts, greenhouses, or other outdoor applications where AC power is unavailable. NODE-BT is controlled by a multi-language smartphone app. The app maps controllers by location, sends battery-change reminders, and logs controller events for quicker diagnostics. Run-time flexibility is perfect for germinating seeds or other agricultural applications.