For apartment buildings and businesses with 2 units, 2 call buttons
 
Surface and flush mounting possible, housingseparatelyavailable
LAN connection (PoE capable)
2-way audio
Ultra wide angle lens, 720p, night vision, 12 infrared LEDs
4D motion sensor, RFID reader
keypad
2 freely configurable bistable switching relays
 
HIGHLIGHTS AND DETAILS
Open API
Local interface for integration with 3rd party and SIP systems
Video and audio call
On smartphones and tablets (iOS, Android) or landline phones (SIP)
Smart Transmission Mode (STM)
Audio / video transmission in real time, optimized for mobile devices via WiFi, 3G, 4G, 5G
Smart Home & NVR compatible
KNX, Loxone, Synology, KIWI, AVM FRITZ!Fon, URC, Bang & Olufsen, Control4, QNAP, RTI,_cc781905-5cde-3194-bb3bLAN,_cc781905-5cde-3194-bb3bLAN Fibaro and much more
automatic door opener
For use in office and practice environments
Individual schedules and action plans, e.g.:
RFID card "abc" only has access on Wednesday from 9 a.m. to 11 a.m. 
4D motion detector switches on external lamp between 9 p.m. and 6 a.m
geofencing
Automatic gate and door opening when returning home
night vision
With 12 infrared LEDs
HDTV video
Ultra wide angle, hemispherical lens, 180°
light sensor
For night vision mode
microphone
Clear voice transmission
Echo and Noise Cancellation (AEC, ANR)
RFID reader
Remotely configurable via app (e.g. time window)
Motion sensor with 4D technology
Distance up to 10 m (32.8 ft) adjustable via app (interval: 1 m/ 3.3 ft) 
Configurable call button
With backlit name plate
Easy connection to the network
Connection via network cable or bell wire (with 2-wire transformer) to RJ45 socket (PoE, network data)
Two freely configurable bistable switching relays
Two doors or gates can be controlled via app
Status configurable via app: temporary or permanent switching
Keypad module, 12 keys
Configurable via app
Up to 100 individual PIN codes can be configured
Individual events (e.g. switch relay, HTTP(s) call)
 
Matching mounting back housing:
DoorBird D2102KV surface mounting rear housing
DoorBird D2102KV flush mounting rear housing