The HOLMAN WaterWHIZ Fully Automatic Tap Mounted Watering System makes watering your garden quite easy. Simply set the control unit to water each outlet, when and for how long, then relax and enjoy life while your garden is being watered. Controller: The mutli outlet DC waterWHIZ comes with the professional quality 4 program DialEZY Battery controller. This controller is powered by 2 x 9 volt batteries, so the system can be operated remotely and does NOT need mains power. Contents include: 1 x DC Battery powered controller, 5 metres of cable, 1 x universal 20mm/25mm tap adaptor, 1 x 2 outlet (or 4 outlet) Battery powered valve manifold, Outdoor enclosure, 1 x Padlock, Instruction manual, System installation instructions.