GuardianBell Pro delivers realtime alerts, live view, and twoway communication for your door, with simple, wire setup. Realtime alerts with live view and twoway audio: Receive instant phone notifications whenever someone rings. See and talk to visitors in real time using the builtin camera and microphone from anywhere. Smart motion detection with auto snapshots: Advanced sensors detect door activity and automatically capture snapshots. Stay aware of what happens even when there is no ring. Longlasting battery and USBC charging: 4000 mAh rechargeable battery powers weeks between charges. Refill quickly via USBC. Easy, wire installation: No wiring required. Install in minutes with adhesive backing or screws, ideal for renters and homeowners alike. Practical use scenarios: • Front door: screen visitors, speak with couriers, and manage deliveries without opening the door. • Apartment entry: monitor hallway activity and capture motion, even when you're away. • Porch or gate: monitor approachers, receive alerts on your phone, and interact remotely.