This watering computer, with its clear LC display, is easily programmed with three push buttons and a control dial. These elements give access to recommended watering cycles or make it possible to programme personal cycles. The period of watering is infinitely adjustable and can be set from one minute to almost 16 hours. The water-resistant case is designed for 33.3 mm standard screw threads; an adaptor is supplied for 26.5 mm screw threads. In addition, a rain sensor can be attached to the battery-driven watering computer to avoid watering on rainy days.