Liquid medium: clean water (tap water) Suitable water temperature: 5-40 degrees Celsius Working pressure: 0.0-4 kg Watering times: (can be controlled by the rotary switch), the shortest open valve watering time of the specified mode is 1 minute, and the longest continuous output valve open watering time is 120 minutes. Watering cycle: (can be controlled by rotary switch), the shortest cycle time is 1 hour, and the longest cycle time is 72 hours. Power supply used: 3V, 2 AAA batteries(batteries not included) How to use: Insert the battery (when the battery is installed for the first time, the water valve will self-check once, and the valve ball will automatically turn to the closed state) Turn the B rotary switch to the time point of the desired cycle A Rotary switch to the desired continuous watering time point The water valve works automatically according to the set program within 10 seconds Notice: The set cycle time cannot be less than the duration of the open valve output When the B rotary switch is set to 0, the water valve is opened for watering only once When the A rotary switch is set in the OFF state, the water valve will be closed. Size:12.cmx9.5cmx12.5cm(Package Size) Package Included:1pcs*Water Timer