about this project 3 Customizable Irrigation ProgramsThe sprinkler timer has 3 separate programs (P1/P2/P3), each program can set its own start time (24 hours mode), watering duration (1s-99m59s) And watering frequency (1h -15 days). These 3 timer program settings will make your watering plan more flexible, suitable for different plant growth stages and seasons. Smart Rainfall Automatic SensorYou no longer need to manually turn on the Rainfall Delay button to pause your watering schedule. A high-sensitivity sensor module monitors real-time rainfall and then responds to the valve through an interrupt. When the rain sensor dries out, the timer will run again on schedule. Automatic Manual WateringThis timer will automatically run the watering schedule based on the watering start time, duration and frequency you set. It allows for instant watering use without interrupting your planned irrigation schedule. Advanced Circuit Board TechnologyThe watering timer has a built-in high-precision IC chip and a low-voltage fully enclosed solenoid valve, which can quickly handle complex watering procedures, and the on-off valve control is more stable. It is powered by 2 AA 1.5V batteries (not included) and can run for over 6 months. User Friendly FeaturesThe large 8 x 4 cm LCD display on the digital sprinkler timer can display the current time, program details, battery level, child lock and all other operating information. This plumbing timer is also very easy to install and can be installed without any tools. Ideal for use in gardens, yards, flower beds, greenhouses, meadows, patios and farms and more.