D21DKV Surface-mount IP Video Intercom

Complete IP video intercom system for multi-tenant buildings — surface-mount configuration, ready to install. The DoorBird D21DKV is a professional all-in-one video intercom engineered for apartment complexes, condominiums, and commercial properties with up to 500 units. One unit, one cable: HD camera, keypad, RFID reader, and display are all built in — and fully controllable via the DoorBird app from anywhere in the world. Specifications: Includes surface-mounting housing — no separate backbox required LAN connection with PoE — single cable carries data and power HD 720p ultra-wide camera, night vision, 12 IR LEDs Full-duplex two-way audio 4D radar motion sensor with configurable detection zones RFID reader and keypad with display (supports up to 500 units/apartments) 2 freely configurable bistable switching relays for door, gate, or elevator control IP65 weatherproof — rated for outdoor installation DoorBird app (iOS & Android): live video, remote unlock, push notifications SIP