Usage Tips:Simple Regulation: 8 Modes help you tend your flowers, trees and vegetables daily every two, three, five or seven days Widely Used: This controller is suitable for 19mm pipes/valves. Compatible with garden sprinklers (up to 8 bar) or cisterns and water collectors (0.1 bar). Excellent Quality: Able to work under bad weather because it is waterproof and the batteries are hidden in it Working Principle: Ball Valve works with 2 AAA Alkaline 1.5V batteries Water Saving and Environment Friendly: This Timer can work with water and rain, it protects the water resource. Product This timer allows you to set it and it will do the watering for you. Please close the top cover very tightly, to ensure that water can't get inside Features: Use one LR032XAAA 1.5V alkaline battery (not included) High impact durable construction Clock time display 8 different programs ready to be set Operating pressure: 0 to 8 bar (0116 PSI) Working temperature: 560 C (40140 F) Can be attached to a 3/4' (19 mm) faucet or faucet Manual watering: can be set for onetime instant manual watering Manual On, Manual Off, Automatic Mode Frequency can be set per day, or each day of the week, 15 different day choices