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Dahua

IP Apartment Door Station

Name: IP Apartment Door Station
Brand: Dahua
SKU: VTO6521H-D-S2

Stock Code: VTO6521H-D-S2

Shows the visitor and opens the apartment door with a card or a password.

An IP door station for apartment entrances. Its 4.3 inch touch screen and 2 MP CMOS camera carry the visitor to the indoor monitor, and it unlocks with a password, a card or a QR code. The IP65 rated PC + ABS housing stands up to outdoor conditions.

4.3 inchDisplay

800 × 480Screen resolution

2 MPImage sensor

10/100 MbpsNetwork port

PoEPower Options

IP65Protection Grade

Key features

120dB

Wide dynamic range

It keeps the person at the door and the background sharp against backlight.

25fps

Smooth video

It carries the main stream and the sub stream without breaks.

5cm

Short range card reading

A resident holds the card to the reader and the door opens right away.

12V DC

Auxiliary power output

It feeds an extension module or a card reader with 500 mA.

18W

Measured power draw

It stays under the 5 W standby limit and keeps working consumption low.

EVERYDAY USE

Remote unlockingResidents open the door from the indoor monitor, the management center or the mobile app.

Message drop-offWhen no one answers on the indoor monitor, the visitor leaves an audio and video message.

Alarm reportingIt reports duress, tamper, emergency and door detector alarms.

Usage AreaApartment entrances·Building entrance doors

The housing requires silicone sealant for a complete seal. The indoor monitor needs an SD card to store messages.

VTO6521H-D-S2 IP Apartment Door Station - Specifications
Camera
Image Sensor	1/2.8" 2MP CMOS (High Definition, Low Illumination)
Field of View	H: 95°; V: 50°; D: 110°
WDR	120 dB
Imaging	3D NR; Auto White Light Compensation
Video
Video Compression	H.264; H.265
Resolution	Main Stream: 720P/D1/WVGA; Sub Stream: 1080P/720P/D1/WVGA/CIF/QVGA
Video Frame Rate	25 fps
Video Bit Rate	1,024 kbps – 8,192 kbps
Audio
Audio Compression	G.711a; G.711u; PCM
Two-Way Talk	Yes; built-in speaker, echo suppression, digital noise reduction
Display & Access
Display Screen	4.3-inch Touch Screen (800 × 480)
Button Type	Touch Button
Card Reader	IC Card; 0 cm – 5 cm reading distance
Verification	Remote; Card; Password
Card Capacity	20,000
Network
Network Port	1 × 10 Mbps/100 Mbps Ethernet
Protocols	RTMP; HTTP/HTTPS; DNS; RTSP; SSH; ONVIF; SIP; RTP
I/O Interfaces
RS-485	1
Wiegand	1 (configurable as input/output)
Alarm Input	2 channels
Alarm Output	2 channels
Lock Control	1 channel (open by default)
Exit Button	1 channel
Door Status Detection	1 channel
General
Power Supply	12 V DC, 2 A; Standard PoE
Power Consumption	Standby: ≤5 W; Working: ≤18 W
Ingress Protection (IP)	IP65
Operating Temperature	–30 °C ~ +60 °C
Operating Humidity	0% – 90% (RH), non-condensing
Dimensions	388.5 × 145.5 × 43.5 mm (H × W × D)
Weight	1.48 kg
Casing Material	PC + ABS

Datasheet

VTO6521H-D-S2

12/6/2026

Hızlı Kurulum Kılavuzu

VTO6521H-D-S2

12/6/2026

Teknik Çizim

VTO6521H-D-S2

12/6/2026

VTO6521H-D-S2

12/6/2026

IP Apartment Door Station

Stock Code: VTO6521H-D-S2

Shows the visitor and opens the apartment door with a card or a password.

4.3 inchDisplay

800 × 480Screen resolution

2 MPImage sensor

10/100 MbpsNetwork port

PoEPower Options

IP65Protection Grade

Key features

120dB

Wide dynamic range

It keeps the person at the door and the background sharp against backlight.

25fps

Smooth video

It carries the main stream and the sub stream without breaks.

5cm

Short range card reading

A resident holds the card to the reader and the door opens right away.

12V DC

Auxiliary power output

It feeds an extension module or a card reader with 500 mA.

18W

Measured power draw

It stays under the 5 W standby limit and keeps working consumption low.

EVERYDAY USE

Remote unlockingResidents open the door from the indoor monitor, the management center or the mobile app.

Message drop-offWhen no one answers on the indoor monitor, the visitor leaves an audio and video message.

Alarm reportingIt reports duress, tamper, emergency and door detector alarms.

Usage AreaApartment entrances·Building entrance doors

The housing requires silicone sealant for a complete seal. The indoor monitor needs an SD card to store messages.

VTO6521H-D-S2 IP Apartment Door Station - Specifications
Camera
Image Sensor	1/2.8" 2MP CMOS (High Definition, Low Illumination)
Field of View	H: 95°; V: 50°; D: 110°
WDR	120 dB
Imaging	3D NR; Auto White Light Compensation
Video
Video Compression	H.264; H.265
Resolution	Main Stream: 720P/D1/WVGA; Sub Stream: 1080P/720P/D1/WVGA/CIF/QVGA
Video Frame Rate	25 fps
Video Bit Rate	1,024 kbps – 8,192 kbps
Audio
Audio Compression	G.711a; G.711u; PCM
Two-Way Talk	Yes; built-in speaker, echo suppression, digital noise reduction
Display & Access
Display Screen	4.3-inch Touch Screen (800 × 480)
Button Type	Touch Button
Card Reader	IC Card; 0 cm – 5 cm reading distance
Verification	Remote; Card; Password
Card Capacity	20,000
Network
Network Port	1 × 10 Mbps/100 Mbps Ethernet
Protocols	RTMP; HTTP/HTTPS; DNS; RTSP; SSH; ONVIF; SIP; RTP
I/O Interfaces
RS-485	1
Wiegand	1 (configurable as input/output)
Alarm Input	2 channels
Alarm Output	2 channels
Lock Control	1 channel (open by default)
Exit Button	1 channel
Door Status Detection	1 channel
General
Power Supply	12 V DC, 2 A; Standard PoE
Power Consumption	Standby: ≤5 W; Working: ≤18 W
Ingress Protection (IP)	IP65
Operating Temperature	–30 °C ~ +60 °C
Operating Humidity	0% – 90% (RH), non-condensing
Dimensions	388.5 × 145.5 × 43.5 mm (H × W × D)
Weight	1.48 kg
Casing Material	PC + ABS