Product Details ①. Customisable watering schedules with duration from 1 second to 99 minutes and frequency from 1 hour to 15 days, meeting various plant needs ②. 3 independent irrigation programs for separate configuration, allowing flexible adjustment of different watering plans ③. Automatic rain sensor on top delays watering when in contact with rain, preventing over-watering ④. Manual irrigation button for instant watering without affecting preset schedules ⑤. Child lock function to prevent accidental changes to programmed settings Specification ①. Watering duration: 1 second - 99 minutes ②. Watering frequency: 1 hour - 15 days ③. Irrigation systems: 3 separate programs ④. Power supply: 2 x 1.5V alkaline batteries (lithium batteries prohibited) Package List ①. Smart watering computer Warm Tips ①. Use only two 1.5V alkaline batteries; do not use lithium batteries ②. Keep the rain sensor chip clean for accurate rain detection ③. Activate child lock after setting to avoid unintended modifications