6 independently operated programs: The Smart Water Computer has 6 programs that operate independently of each other. It can be watered 6 times a day, and the duration of each watering ranges from 1 second to 99 minutes and 99 seconds. Two frequency modes: The irrigation controllers can set two different watering frequencies, one is set according to Monday to Sunday, the other is set according to hours and days, the shorter frequency is once a hour, the longest at one watering every 9 days. Automatic rain detection: A rain sensor chip is placed on the top of the smart irrigation controller. When rain falls on the sensor chip, the irrigation control unit automatically stops watering until the rain on the rain sensor chip dries up, and the irrigation controller automatically runs the next irrigation schedule. Manual irrigation and child lock: The manual button allows instant and flexible watering without interrupting your set watering schedule. Child Lock can lock the timer can avoid accidentally changing the programmed setting. Special attention: lithium batteries are prohibited. Two 1.5 V alkaline batteries must be used.