This indoor-outdoor timer is so easy to use you can forget the instructions. Its intuitive zone-by-zone scheduling allows you to set watering times differently for each area of the yard, providing greener results with less water. By turning the dial to each zone, you can easily set more or less watering for full sun and shaded areas, or water slopes and clay soils in short intervals to allow water to soak in, avoiding runoff. You can also set different timing and frequency of pop-up sprays vs. rotor zones and customize watering of trees and landscaped areas in Drip zones. Each zone's setting can be reviewed easily in one view with a turn of the dial. Color coded terminals make it easy to connect zone wires as well as master valves, pump start relays or a rain sensor. Just strip wires and push in to connect - no screwdriver needed.