DUAL POWER SUPPLYWhen the mains power is out, battery power will be available. Power battery, With three D alkaline batteries (Not included in the package). You can choose the appropriate power supply according to your needs. Infrared SensingBuilt-in infrared sensing can prevent food from overflowing or blocking and allow your pets to enjoy meals. this system can be adapted to all forms of dry food. Recording voicemails: Even if you don't stay in the house, you can record a voicemail to call dogs or cats to eat or drink. This dispenser can record your voice for 10 seconds to call pets for meals. You no longer have to worry about your pet forgetting to eat meals or feeling lonely. Preset time and quantity of food Precise feeding, control the quantity of food and keep your pet healthy. This automatic food dispenser can provide 4 possible meals in a day, you can preprogram the time you want Whether your pet has to eat and the quantity of each meal (from 5 g to 100 g per meal, there are 29 portions, 5g for one portion), the dispenser can operate automatically every day. Easy to Clean and Non-SlipThe storage tank can be separated from the body, and the stainless steel feeding bowl design is convenient for cleaning and can also be cleaned more cleanly. The base is stable and non-slip, so the bowl does not fall when pets eat.