Whether you are setting up a temporary irrigation system on a landscape or growing outdoor crops, this versatile controller will allow you to govern irrigation to meet your needs. This waterproof single valve unit operates 3 to 12 months on a single 9-volt battery. Using the simple keypad, you can select from three modes: 1) single start, 2) start and stop on select days or 3) start on three different times per day. Pipe size is 3/4". USA made.