Automatic Fish feeder:This timed fish feeder can feed fish automatically by simply setting. Never need worry the feeding problems when vacation or on business. You can set up the fish food amount, feed times, when to feed the fish, manual or automatic. Up to 4 times Per Day: Adjust the slider to setup the food amount. Up to 4 feeding times per day & 1-2 rotation per time. Switch to the manual mode if you want. Follow the manual to set modes easily. Flexible and convenient. Food style choose:This item can be only used for the dry food. Very Suitable for pellets, granular, strip and flake fish feeder. Please put this item above the tank higher to avoid the food getting damp. Then fix the tank lid well and only leave a hole. Put some aquatic weed to the hole and let the food drops to this hole, the fish will come to eat the food. Easy to install: Two ways to install the feeder to the tank. 1.Clip on the tank wall by rotating the screw. 2.Affix the feeder with double-side sticker (included) on the fish tank cover. Choose proper way per your needs. Battery operated: Powered by 2 AAA batteries(not included). The "Lo" displayed on the LCD indicates the power is low, please ensure the power when you go out.