1. Button basic models: manual food delivery, free meals, regular ration, scientific health, power-off memory, no need to reset, ultra-low energy consumption, dual power supply system
2. WiFi smart model: remote feeding, timing ration, APP recording, power-off memory, super low energy consumption, power saving, smart APP multi-account sharing
3. Bluetooth smart models: timing and quantification, Bluetooth connection, APP recording, power-off memory, ultra-low energy consumption, power saving, dual power supply system, continuous power failure
4. Video smart models: video voice, high-definition images, smart remote, timing and quantification, APP recording, real-time photography, power-off memory, dual power supply system