"Manual" button is for manual feeding, "Auto" button is for automatic feedingPress the "Auto" key once and the "24h" light is on, which means that you will feed immediately and then feed again at 24 hours intervalsPress the "Auto" button twice and the "12h" light will be on, which means that you will feed immediately once at an interval of 12 hours.Press the "Auto" key 3 times, all the lights are off, indicating that automatic feeding is cancelledOne-key operation, easy to understand and easy to useEffectively prevent water vapor from entering the food box and causing the fish food to become dampIntelligent control, controlled feeding, durable, regular feeding, twice a day, worry-free vacationApproximately 30g for various shapes of feed.Install the fixing bracket on the main body, place it on the edge of the fish tank, and tighten the screws.If you have any questions , please contact us in time, we will reply and solve the problem within 24 hours.