PIR MOTION DETECTION - This wireless doorbell camera has built-in PIR motion detection function. You can set the motion detection sensitivity according to your needs. In a crowded environment, it is recommended to set Motion Detection Sensitivity to Low to extend battery life and avoid too much disturbance. The [Versatile & Small Size] Video Doorbell is one of the smallest sizes in the industry, and the designer specially designed it according to the size of the door frame of the American house. has video intercom, taking photos, videos, night vision, PIR and other functions to make your life more convenient. [IP55 WATERPROOF & ENERGY SAVING] IP55 dustproof and waterproof; You don't have to worry about the battery life is too short because the 3200mAH battery (full charge can support 5-6 months [Easy to install and service guarantee] Equipped with 16G card Free TF (3000 video storage), support 2.4G WiFi, not 5G.12 months warranty and lifetime support.Any questions, please feel free to contact us.[1080P FULL HD & 166WIDE VIEWING ANGLE] Real-time HD view with wide viewing angle make you never miss any visitor..Sends a message when any motion is detected day or night.The night vision mode will be switched automatically.