Cyber-Rain is a sprinkler controller with a brain. It uses your PC to check the weather and automatically adjusts watering times. When it is hot, Cyber-Rain waters more. When it is cool or humid, Cyber-Rain waters less. When it is raining, Cyber-Rain doesn't water at all. Cyber-Rain typically pays for itself within 2 years, qualifies for water conservation rebates and is great for the environment. Cyber-Rain manufactures controllers for residential and light commercial settings.