HIGH RESOLUTION:The wireless video door phone camera features 2MP 1080p HD resolution with a large 4.3 inch screen, which provides a clear view of the outside of your door. 24-hour surveillance - The camera activates motion detection and automatically notifies the mobile app when someone stays between 1 and 3 meters from the door for 5 seconds, providing all-day monitoring. Intelligent PIR Infrared Detection - With a 160° diagonal wide-angle view and a PIR human induction sensor, there are three levels of sensitivity available to select. REAL-TIME LIVE STREAMING - With HEVC (H.265) encoding protocol, it ensures live streaming and fast video loading; When a Micro storage card (not included), the doorbell will continue recording even if the network is cut off. Rechargeable Battery: Equipped with a built-in 5000mAh rechargeable lithium battery and a micro USB charging interface, a single charge can last for 40-60 days.