DoorBird 423870840 D21DKV IP V...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$6,079.89
DoorBird 423870840 D21DKV IP Video Door Station with RFID Reader and Keypad, Stainless Steel V2A Brushed

DoorBird 423870840 D21DKV IP Video Door Station with RFID Reader and Keypad, Stainless Steel V2A Brushed

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Model: 423870840
Selected Video Intercom is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$6,079.89
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DoorBird D21DKV IP Video Door Station with RFID Reader and Keypad, Stainless Steel V2A Brushed

The DoorBird D21DKV IP Video Door Station is a smart entrance solution built from brushed Stainless Steel V2A, offering surface and flush mount options with housings sold separately. Featuring a 720p HDTV ultra-wide angle hemispheric lens at 180" (D), 140" (H), 100" (V), 2-way audio, night vision with 12 infrared LEDs (850 nm), a 4D motion sensor, RFID reader, and illuminated keypad, this unit connects your entrance directly to your smartphone via LAN (PoE Capable) connection. Weatherproof and rated for operating conditions from -25 to +55°C / -13 to 131°F with 10 to 85% RH (non-condensing), it is engineered for demanding commercial and residential access control applications.

Key Features

  • Compact Dimensions: 402 x 156 x 48.75 mm (H x W x D) / 15.83 x 6.14 x 1.92 in (H x W x D), with a 3 mm (0.12 in) front panel, weighing 1988 g.
  • Flexible Power Options: Operates on 15 V DC (max. 15 W) or Power over Ethernet (PoE 802.3af Mode-A) for versatile installation configurations.
  • Network Connectivity: LAN connection with PoE capability supports connection via network cable or bell wire using the DoorBird A1071 2-Wire Ethernet PoE converter.
  • HDTV Ultra-Wide Angle Lens: High-end hemispheric lens with 180" (D), 140" (H), 100" (V) field of view, IR-capable and straightened for clear visitor identification.
  • Advanced Night Vision: Automatic IR-cut filter with light sensor and 12 Infrared LEDs (850 nm) ensures reliable low-light visibility.
  • Integrated Access Control: RFID reader with 1 m (3.3 ft) range at 125 KHz frequency plus illuminated call button and keypad for flexible entry management, including scheduled access permissions.
  • Two-Way Audio Communication: Microphone intercom with clear voice transmission, noise reduction, and echo cancellation (AEC, ANR) for crisp conversations.
  • Mobile & SIP Integration: Compatible with smartphones, tablets (iOS, Android), IP and landline phones (SIP), with real-time audio/video communication optimized for Wi-Fi, 3G, 4G, and 5G networks.
  • Weatherproof Construction: Weather-resistant design suitable for exterior entrance installation in varied climate conditions.

Certifications & Compliance

  • Weather-proof Rated

Technical Specifications

  • Front panel: 3 mm (0.12 in)
  • Mounting type: Flush- or surface-mounted, mounting housing sold separately
  • Power supply: 15 V DC (max. 15 W) or power over Ethernet (PoE 802.3af Mode-A)
  • Weight: 1988 g
  • Dimensions: 402 x 156 x 48.75 mm (H x W x D) 15.83 x 6.14 x 1.92 in (H x W x D)
  • Operating conditions: -25 to +55°C / -13 to 131°F humidity 10 to 85 % RH (non-condensing)

Typical Applications

  • Commercial Office Buildings
  • Medical Offices and Healthcare Institutions
  • Multi-Tenant Residential Properties
  • Educational Facilities
  • Retail Establishments
  • Government and Municipal Buildings

Why DoorBird D21DKV?

DoorBird D21DKV video door stations deliver professional-grade reliability with durable brushed Stainless Steel V2A construction and a weatherproof design rated for extreme operating conditions from -25 to +55°C. Engineered for demanding entrance security applications, the integrated RFID reader, keypad, and HDTV night vision camera combine to provide dependable, feature-rich access control and communication in a single unit.

Product Specs

Catergory:
Access Control
Subcategory:
Intercoms
Product Group:
Electronic Access Controls
Product Subgroup:
Intercoms
Product Type:
Video Intercom
Series:
D21DKV
Call Button:
Illuminated
Power Supply:
15 V DC
Weather-proof:
Yes
Camera:
HDTV 720p, dynamic (VGA – HDTV)
Lens:
High-end ultra wide-angle hemispheric lens 180° (D), 140° (H), 100° (V), straightened, IR-capable
Night vision:
Yes, light sensor, automatic IR-cut filter, 12 Infrared LEDs (850 nm)
Range:
1 m (3.3 ft)
Frequency:
125 KH
Front Panel:
3 mm (0.12 in)
Product Dimension:
15.83 x 6.14 x 1.92 in (H x W x D)
Mounting Method:
Flush Mounted or Surface Mounted
Department:
Door Hardware

DoorBird 423870840 – Frequently Asked Questions

1) Does the DoorBird D21DKV come with the mounting housing, or do I have to order that separately?
The mounting housing is not included. The D21DKV front panel can be flush mounted or surface mounted, but you choose and order the housing to match the install. Budget for it on the same order, because without it there is nothing to set the unit into. The front panel itself is 3 mm (0.12 in) thick brushed stainless steel V2A, and the unit measures 15.83 x 6.14 x 1.92 in (H x W x D), so size the wall opening or surface location to that.
2) How do you power and wire a DoorBird D21DKV door station?
Two options. Either 15 V DC power at the station, or Power over Ethernet on 802.3af Mode-A, which carries data and power on one Cat cable and is the cleaner run for a new install. Max draw is 15 W. If the building only has existing bell wire to the door and no room to pull network cable, the DoorBird A1071 2-Wire Ethernet PoE converter lets you run the station over that pair instead of re-pulling.
3) Can the D21DKV be mounted outside where it gets rain, snow and direct sun?
Yes. The D21DKV is weatherproof and rated to operate from -25 to +55 C (-13 to 131 F) at 10 to 85% RH non-condensing, so it holds up at an exterior entrance in cold and hot climates alike. The face is brushed stainless steel V2A. Note the rating is an operating range, not a submersion claim, so mount it as designed in its housing rather than exposing the back of the unit.
4) What RFID credentials work with the D21DKV reader, and how close does the fob have to be?
The reader runs at 125 KHz, so it reads low-frequency proximity credentials at that frequency. Read range is 1 m (3.3 ft). If your building is already standardized on 13.56 MHz smart cards, those will not read here, and that is the thing to check before ordering a keypad-and-RFID station for a site with an existing credential population.
5) Do tenants need a fob, or can they get in with a code on the DoorBird D21DKV?
Both. The D21DKV carries an illuminated keypad alongside the 125 KHz RFID reader, so a resident or a contractor can be given a code without issuing a physical credential, and access permissions can be scheduled. That combination is why this model gets specified for multi-tenant and mixed-traffic buildings: fobs for permanent residents, codes with a schedule for cleaners, trades and deliveries.
6) How much of the entryway will the D21DKV camera actually see?
The lens is a hemispheric ultra wide-angle covering 180 degrees diagonal, 140 degrees horizontal and 100 degrees vertical, straightened so the image is not fisheye distorted. In practice that means a single station covers the full width of a doorway plus a package left on the step, rather than framing just a face. Resolution is HDTV 720p, dynamic from VGA up to HDTV depending on the connection.
7) Will the D21DKV show a clear picture at night without a porch light?
It will. Night vision is handled by 12 infrared LEDs at 850 nm with a light sensor and an automatic IR-cut filter, and the lens is IR-capable, so the camera switches itself over when light drops. No separate exterior fixture is required for the camera to identify a visitor after dark.
8) Does a DoorBird video door station need a handset inside the unit, or can calls go to phones?
No indoor station is required. Calls from the D21DKV go to smartphones and tablets on iOS and Android, and it also speaks SIP, so it can ring IP desk phones or a landline through a SIP setup. That is the practical difference from a traditional wired intercom: no home run to a handset at every apartment or every desk, just the network drop at the door. Audio is two-way with noise reduction and echo cancellation.
9) How many units or apartments can one D21DKV serve?
The D21DKV is configured for up to 500 units, which puts a single station within range of most multi-tenant residential buildings, office floors with many tenants, and campus entries. It has one illuminated call button on the face, with the keypad and directory logic handling the rest rather than a wall of physical buttons.
10) What size opening do I need to rough in for a D21DKV, and how far does it stand off the wall?
The station measures 15.83 x 6.14 x 1.92 in (H x W x D), which is 402 x 156 x 48.75 mm. It weighs 1988 g. On a flush install the wall cavity has to take the depth behind the 3 mm face; on a surface install that depth sits proud of the wall. Coordinate the rough-in to the specific mounting housing you order, since the housing and not the front panel sets the final opening.
11) Will the D21DKV wake up when someone approaches, or only when they press the button?
There is a 4D motion sensor built in, so the station registers someone approaching the door rather than depending on the visitor pressing the call button. For a property manager that is the difference between a doorbell and a record of who came to the entrance, which matters at service doors and after-hours entries where nobody rings.
12) Is the DoorBird D21DKV stainless face going to hold up in a coastal or high-traffic entrance?
The face is V2A brushed stainless steel with a 3 mm (0.12 in) front panel, which is a substantial plate rather than a thin skin, and the unit is rated weatherproof across -25 to +55 C. Brushed stainless hides fingerprints and handling marks better than a polished face, which is why it gets picked for lobby and service entrances that see constant use.
13) Where can I get the DoorBird D21DKV wiring diagram and installation manual?
DoorBird publishes both a datasheet and a full product manual for the D21DKV, plus a separate warning and safety information sheet. Pull the product manual before the rough-in, since it covers the network and power terminations and the mounting housing detail that decide the wall opening.
How fast can I get the DoorBird 423870840 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the DoorBird 423870840 come with a warranty?
Absolutely. The DoorBird 423870840 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the DoorBird 423870840?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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