The Junior DC is a versatile battery operated controller. Battery operation The Junior DC is a versatile battery operated controller. Battery operation allows placement of control valves in locations that are difficult or expensive to reach with traditional systems. Junior DC controllers boast two independent programs, 3 start times per program and are packed with other programming features such as water budgeting, program stacking and the rain off function. The programming flexibility of the Junior DC will meet the scheduling needs of most agriculture drip irrigation systems.