DoorBird D21DKH IP VIDEO DOOR STATION

For multi-tenant residences and buildings with up to 100 units
Display Module ∙ Keypad Module

Automatic door buzzer
• For use in medical offices
and office environments
Receive packages at any time
• Direct the parcel carrier e.g.
to the neighbor or open the
garage door via smartphone
Free visitor history
• Store still images for free.
Optional video recording
available.
Geofencing
• Automatic door and gate
opening when returning
home
Burglary prevention
• Prevents more break-ins
than an alarm system
Night vision
IR • With 12 Infrared LEDs
Light sensor
• For night vision mode
Motion sensor with
4D technology
• Distance up to 10 m
adjustable via App
(interval: 1 m)
4D
HDTV Video
• Ultra wide-angle,
hemispheric lens, 180°
HD
Noise reduction and
echo cancellation
(AEC, ANR)

Easy connection to the
network
• Connection via a network
cable or a bell wire (with a
2-wire transformer) to a RJ45
socket (PoE, network data)
Two freely configurable
bi-stable switching relays
• Two doors or gates can
be controlled via App
• Status configurable
via App: temporary or
permanent circuit
DOORBIRD D21x
REL1 REL2 EXT 15 VDC
– +
Display Module
• Distance sensitivity on/off
• Individually configurable,
e.g.: display of the resident
directory, welcome
message configurable
RFID card reader
• Configurable remotely via
App (e. g. time frame)

Keypad Module
• Configurable via App
• Individual PIN codes
• Individual events (e.g.:
a relay switch, push
notification, …)

TECHNICAL SPECIFICATIONS

TECHNISCHE DATEN
MOTION SENSOR
Type Active
Detection angle 54° (H), 70° (V)
Range
Since a “Display Module“ is connected to the
Main electrical unit, the range is limited to
1 m (3.3 ft).
Technology 4D. Based on multiple integrated sensors and
algorithms, e.g. Radio Frequency Energy (RFE)
GENERAL
Front panel
3 mm (0.12 in)
Available in brushed stainless steel
V2A / V4A
Mounting housing
(backbox) Stainless steel
Mounting type Flush-mounted, surface-mounting housing sold
separately
Power supply 15 V DC (max. 15 W) or Power over
Ethernet (PoE 802.3af Mode-A)
Display Module
3.5“ LCD (no touch function), illuminated,
for the display of a 2-line free text and the
name directory (max. 100 entries)
Keypad Module
16 keys, illuminated, configurable
via App, e.g.
• Individual PIN codes
• Individual events (e.g. switch a relay,
push notification, SIP call