From the Manufacturer
One dial allows complete timer control functionality. Cycles easily from set clock, set watering time, how often, how long, then run program. A rain delay is built into the run program function. A manual button allows program interruption
The Orbit Single-Dial Water Timer will turn your hose faucet into a programmed sprinkler system in minutes. No more dead plants because you forgot to water them. No more soggy lawns because you forgot to turn the water off. Just set the timer and go! With a large digital display, oversized dial, and simple controls, programming is fast and easy. Built with high quality materials and water-resistant construction, you can count on many years of dependable service.