The high quality Fanvil i64 SIP Outdoor Video & Audio Doorphone (i64) with 16 keys (including 12 number keys & 4 function keys (Management Center/PasswordMode/Dial/Backspace). It is based on SIP and ONVIF protocols, i64 is a video door phone that integrates powerful access control, intercom, and security protection functionalities. It has an aluminum alloy design and a lighting numeric keypad,