Product comparison · 2 video intercom systems

Dahua Technology VTO3211D-P video intercom system vs Dahua Technology VTO6521K-S2 IP Apartment Door Station

20specifications compared
10differ
10identical
29known for one product only

Key differences

The Dahua Technology VTO3211D-P video intercom system has 45° more viewing angle, horizontal than the Dahua Technology VTO6521K-S2 IP Apartment Door Station (140° vs 95°). The Dahua Technology VTO3211D-P video intercom system has 10 - 90% more operating relative humidity (H-H) than the Dahua Technology VTO6521K-S2 IP Apartment Door Station (10 - 90% vs 0 - 90%). The Dahua Technology VTO6521K-S2 IP Apartment Door Station has 305 mm more width than the Dahua Technology VTO3211D-P video intercom system (406 mm vs 101 mm). Only the Dahua Technology VTO6521K-S2 IP Apartment Door Station has indoor unit included. Voice codecs: G.711 on the Dahua Technology VTO3211D-P video intercom system, G.711a, G.711u, PCM on the Dahua Technology VTO6521K-S2 IP Apartment Door Station.

Viewing angle, horizontal
- VTO3211D-P video intercom system:140°
- VTO6521K-S2 IP Apartment Door Station:95°
Voice codecs
- VTO3211D-P video intercom system:G.711
- VTO6521K-S2 IP Apartment Door Station:G.711a, G.711u, PCM
Product colour
- VTO3211D-P video intercom system:Black, Grey
- VTO6521K-S2 IP Apartment Door Station:Stainless steel
Operating relative humidity (H-H)
- VTO3211D-P video intercom system:10 - 90%
- VTO6521K-S2 IP Apartment Door Station:0 - 90%
Width
- VTO3211D-P video intercom system:101 mm
- VTO6521K-S2 IP Apartment Door Station:406 mm
Depth
- VTO3211D-P video intercom system:30 mm
- VTO6521K-S2 IP Apartment Door Station:143 mm
Height
- VTO3211D-P video intercom system:182 mm
- VTO6521K-S2 IP Apartment Door Station:54 mm
Weight
- VTO3211D-P video intercom system:800 g
- VTO6521K-S2 IP Apartment Door Station:2.3 kg

Side by side

Differences highlightedShow differences only

Comparison of VTO3211D-P, VTO6521K-S2
49 specifications	A Dahua Technology VTO3211D-P video intercom system Model VTO3211D-P View product	B Dahua Technology VTO6521K-S2 IP Apartment Door Station Model VTO6521K-S2 View product
Featuresidentical
Connectivity technology	Wired	Wired
Speakerphone	Yes	Yes
Echo cancellationKnown for one	Unknown — not stated by the source	Yes
Built-in microphoneKnown for one	Yes	Unknown — not stated by the source
Number of buttonsKnown for one	1 buttons	Unknown — not stated by the source
Wall mountableKnown for one	Yes	Unknown — not stated by the source
Displayidentical
Display diagonalKnown for one	Unknown — not stated by the source	10.9 cm (4.3")
Display resolutionKnown for one	Unknown — not stated by the source	800 x 480 pixels
Camera1 differ
Megapixel (approx.)	2 MP	2 MP
Supported video modesKnown for one	Unknown — not stated by the source	720p, 1080p
Sensor type	CMOS	CMOS
Optical sensor size	25.4 / 2.8 mm (1 / 2.8")	25.4 / 2.8 mm (1 / 2.8")
Maximum frame rateKnown for one	Unknown — not stated by the source	25 fps
Viewing angle, horizontalDiffers	140°	95°
Viewing angle, verticalKnown for one	Unknown — not stated by the source	50°
Audio1 differ
Built-in speaker(s)	Yes	Yes
Noise-cancelingKnown for one	Unknown — not stated by the source	Yes
Voice codecsDiffers	G.711	G.711a, G.711u, PCM
Design1 differ
Product colourDiffers	Black, Grey	Stainless steel
International Protection (IP) code	IP65	IP65
IK codeKnown for one	IK08	Unknown — not stated by the source
Outdoor unit housing materialKnown for one	Aluminium	Unknown — not stated by the source
Placement supportedKnown for one	Vertical	Unknown — not stated by the source
Proper useKnown for one	Outdoor	Unknown — not stated by the source
Indoor unitidentical
Alarm input channelsKnown for one	Unknown — not stated by the source	2
RS-485 portsKnown for one	Unknown — not stated by the source	1
Network1 differ
Ethernet interface type	Fast Ethernet	Fast Ethernet
Ethernet LAN data rates	10,100 Mbit/s	10,100 Mbit/s
Ethernet LAN (RJ-45) portsKnown for one	Unknown — not stated by the source	1
Supported network protocolsDiffers	TCP/IP	FTP;RTMP;HTTP/HTTPS;DNS;RTSP;SSH;ONVIF;SIP;RTP
Power over Ethernet (PoE)Known for one	Yes	Unknown — not stated by the source
Softwareidentical
Operating system installed	Linux	Linux
Poweridentical
Indoor unit power typeKnown for one	Unknown — not stated by the source	DC/PoE
AC adapter output voltageKnown for one	Unknown — not stated by the source	12 V
AC adapter output currentKnown for one	Unknown — not stated by the source	2 A
Power consumption (typical)Known for one	Unknown — not stated by the source	18 W
Power consumption (standby)Known for one	Unknown — not stated by the source	5 W
Outdoor unit power typeKnown for one	DC	Unknown — not stated by the source
Operational conditions1 differ
Operating relative humidity (H-H)Differs	10 - 90%	0 - 90%
Operating temperature (T-T)Known for one	Unknown — not stated by the source	-30 - 60 °C
Door station operating temperature (T-T)Known for one	-40 - 60 °C	Unknown — not stated by the source
Weight & dimensions4 differ
WidthDiffers	101 mm	406 mm
DepthDiffers	30 mm	143 mm
HeightDiffers	182 mm	54 mm
WeightDiffers	800 g	2.3 kg
Packaging data1 differ
Indoor unit includedDiffers	No	Yes
Outdoor unit includedKnown for one	Yes	Unknown — not stated by the source
Technical detailsidentical
CertificationKnown for one	Unknown — not stated by the source	CE
Night visionidentical
Night visionKnown for one	Yes	Unknown — not stated by the source

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

Dahua Technology VTO3211D-P video intercom system vs Dahua Technology VTO6521K-S2 IP Apartment Door Station

Key differences

Side by side

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