
The Story
DoorBird Fence Letterbox with D2101KH IP Video Door Station, 1 Keypad, 1 Call Button
Letterbox system with D2101KH IP video door station, 1 keypad, 1 call button
(GTIN/EAN: 4260423900264, P/N: 423900264)
Highlights
- Letterbox flap
- Surface-mounted cover
- Keypad included
- LAN connection (PoE capable)
- 2-way audio
- Ultra-wide angle lens, 720p, night vision, 12 IR LEDs
- 4D motion sensor, RFID reader
- 2 freely configurable bistable switching relay
Features
-
Open API
Local interface for integration with third-party systems and SIP -
Video and audio call
On smartphones, tablets (iOS, Android), IP and landline phones (SIP) -
Smart Transmission Mode (STM)
Real-time audio / video communication, optimized for mobile devices via WiFi, 3G, 4G, 5G -
Smart Home & NVR compatible
Control4, Loxone, Crestron, Synology, AVM FRITZ!Fon, URC, QNAP, RTI, ELAN, Fibaro, Bang & Olufsen and others -
Automatic door buzzer
For use in medical offices and office environments -
Free visitor history
Store still images for free, optional video recording available -
Individual action schedules, e.g.:
RFID card “abc” has only access on Wednesday from 9 am until 11 am
4D motion sensor switches on external lamp between 9 pm and 6 am -
Geofencing
Automatic door and gate opening when returning home -
Night vision
With 12 Infrared LEDs -
HDTV Video
Ultra wide-angle, hemispheric lens, 180° -
Light sensor
For night vision mode -
Microphone
Clear voice transmission - Noise reduction and echo cancellation (AEC, ANR)
-
RFID reader
Configurable remotely via App (e.g. time frame) -
Motion sensor with 4D technology
Distance up to 10 m (32.8 ft) adjustable via App (interval: 1 m/ 3.3 ft) -
Call button
With backlit nameplate -
Easy connection to the network
Connection via a network cable or bell wire via 2-Wire Ethernet PoE Converter “DooBird A1071” (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 -
Keypad Module
Configurable via App
Up to 500 individual PIN codes
Individual events (e.g. trigger a relay, HTTP(s) request) -
Fence-mounted letterbox
with panels -
Material
stainless steel V4A (resistant to saltwater and airborne rust), brushed -
Flap
Flush-mounted letter insertion flap without nameplate -
Surrounding panel
2x Surrounding panel V4A for surface mounting (single C-profile)
4x Surrounding panel V4A for surface mounting (single L-profile)
| Material Guide |
|
Datasheet |
| App User Manual |

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
DoorBird Fence Letterbox with D2101KH IP Video Door Station, 1 Keypad, 1 Call Button
Letterbox system with D2101KH IP video door station, 1 keypad, 1 call button
(GTIN/EAN: 4260423900264, P/N: 423900264)
Highlights
- Letterbox flap
- Surface-mounted cover
- Keypad included
- LAN connection (PoE capable)
- 2-way audio
- Ultra-wide angle lens, 720p, night vision, 12 IR LEDs
- 4D motion sensor, RFID reader
- 2 freely configurable bistable switching relay
Features
-
Open API
Local interface for integration with third-party systems and SIP -
Video and audio call
On smartphones, tablets (iOS, Android), IP and landline phones (SIP) -
Smart Transmission Mode (STM)
Real-time audio / video communication, optimized for mobile devices via WiFi, 3G, 4G, 5G -
Smart Home & NVR compatible
Control4, Loxone, Crestron, Synology, AVM FRITZ!Fon, URC, QNAP, RTI, ELAN, Fibaro, Bang & Olufsen and others -
Automatic door buzzer
For use in medical offices and office environments -
Free visitor history
Store still images for free, optional video recording available -
Individual action schedules, e.g.:
RFID card “abc” has only access on Wednesday from 9 am until 11 am
4D motion sensor switches on external lamp between 9 pm and 6 am -
Geofencing
Automatic door and gate opening when returning home -
Night vision
With 12 Infrared LEDs -
HDTV Video
Ultra wide-angle, hemispheric lens, 180° -
Light sensor
For night vision mode -
Microphone
Clear voice transmission - Noise reduction and echo cancellation (AEC, ANR)
-
RFID reader
Configurable remotely via App (e.g. time frame) -
Motion sensor with 4D technology
Distance up to 10 m (32.8 ft) adjustable via App (interval: 1 m/ 3.3 ft) -
Call button
With backlit nameplate -
Easy connection to the network
Connection via a network cable or bell wire via 2-Wire Ethernet PoE Converter “DooBird A1071” (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 -
Keypad Module
Configurable via App
Up to 500 individual PIN codes
Individual events (e.g. trigger a relay, HTTP(s) request) -
Fence-mounted letterbox
with panels -
Material
stainless steel V4A (resistant to saltwater and airborne rust), brushed -
Flap
Flush-mounted letter insertion flap without nameplate -
Surrounding panel
2x Surrounding panel V4A for surface mounting (single C-profile)
4x Surrounding panel V4A for surface mounting (single L-profile)
| Material Guide |
|
Datasheet |
| App User Manual |





