This is a new generation of high-end smart door lock designed by Apple's chief designer Eisler. It adopts the biometric recognition method of "subcutaneous tissue venous hemoglobin in the palm" to solve the problem of poor fingerprint wear recognition rate for the elderly, achieving a completely new door opening experience of "brushing the palm in seconds across the air". It is equipped with "structured light 3D facial recognition" to make it more reassuring for the elderly to open the door at home. The 16mm ultra-thin panel, metal streamlined curved surface appearance, anodizing, and integrated injection molding process give the V5Max a unique appearance. Mi Home and HomeKit have two-way intelligent connectivity, 170 ° ultra wide angle cat eye, 3 million pixels, 2048P high-definition picture quality, strong safety alarm reminder, welcome message for opening the door, dual lithium battery cycle power supply and many other functions!