[App-WiFi Automatic Fish Feeder] only supports connection to 2.4GHz WiFi. App can set two timing modes. Timing mode: Feed according to the specific time set. Interval mode: Set the first feeding time, and then set an interval time period, and the fish feeder will feed according to the interval time.[Innovative Design] Push-pull feeding design eliminates the problem of fish food getting wet. For precise feeding, the smart fish feeder has four feeding chambers of different sizes, which can be replaced according to the size of fish food. This fish feeder can add a removable fish food storage box on the top of the machine, and the total capacity after installation can reach 430ML.[WiFi Fish Feeder Power Supply] The smart fish feeder is powered directly by USB. After a power outage, when the power is restored, it will automatically connect to the network and resume its scheduled work.Easy to InstallWith adjustable clamp, you can easily tighten the screws to fix the feeder on the aquarium, easy to assemble and disassemble. For closed aquariums, there are 4 protruding fulcrums at the bottom of the fish feeder, which can be directly and stably placed at the opening of the closed aquarium for feeding.[View Feeding History] On the APP, you can view the feeding records of the fish feeder in the past year. Lack of fish feed records. Aquarium water change/cleaning records. Be specific to the year, month, day, hour, and number of feedings.packing list: 1* 100ml WiFi version machine USB interface1* 350ml enlarged compartment