Features of the EZVIZ HP7 Pro 4K System: 2-Wire Video Intercom Multiple Smart Unlocking Methods Facial Recognition Door Unlocking (3D Light) Palm Vein Recognition Door Unlocking. Password or Quick Passcode Door Unlocking. EZVIZ App Door Unlocking. Remote Door/Gate Unlocking. High-Definition 4K Video. 8-inch Color Touchscreen. Intelligent Human Motion Detection. Built-in Chime with Multiple Tones. Smart Unlocking with RFID Card (3 cards included). IP65 Weather-Resistant Design. Supports MicroSD Card (up to 512GB) and EZVIZ CloudPlay Cloud Storage. Voice Changer for Privacy Protection. Crystal Clear Images Day and Night. Supports Dual-Band Wi-Fi 6 (2.4/5 GHz) Full-Color Night Vision in Low Light