Instructions for use: M: Manual button: Press and hold the M button to enter manual mode without affecting the time program settings. +/-: Time button to increase and Decrease: Press and hold to increase or decrease the time. Auto: When all settings are completed, press "Auto" again. At this time, the screen displays the current time and the next watering time. Set the clock: After pressing this button, the +/- button can be used to set the specific time current. You can press +/- to automatically add and subtract.Start time: Press this button to enter the setting and start the watering time mode. You can design the required time by holding +/-. Close: Press it to turn off the timer. Use time: Press this button to enter the set watering time mode. You can design the required time by holding +/-. The time range can only be measured in minutes, for example 1-300 minutes. Usage: Press this button to enter the setting interval mode. The setting time interval can be set once every 1-7 days, and the interval is 6 hours or 12 hours. Reset: Press this button, the machine will reset again and all the settings will be cleared. Material: The shell is made of ABS plastic, and