Product comparison · 2 video intercom systems

Dahua Technology DHI-VTO3211D-P4-S2 video intercom system vs Dahua Technology VTO6521K-S2 IP Apartment Door Station

22specifications compared
11differ
11identical
32known for one product only

Key differences

The Dahua Technology DHI-VTO3211D-P4-S2 video intercom system has 34° more viewing angle, horizontal than the Dahua Technology VTO6521K-S2 IP Apartment Door Station (129° vs 95°). The Dahua Technology DHI-VTO3211D-P4-S2 video intercom system has 24° more viewing angle, vertical than the Dahua Technology VTO6521K-S2 IP Apartment Door Station (74° vs 50°). The Dahua Technology VTO6521K-S2 IP Apartment Door Station has 305 mm more width than the Dahua Technology DHI-VTO3211D-P4-S2 video intercom system (406 mm vs 101 mm). Voice codecs: G.711 on the Dahua Technology DHI-VTO3211D-P4-S2 video intercom system, G.711a, G.711u, PCM on the Dahua Technology VTO6521K-S2 IP Apartment Door Station. Product colour: Grey on the Dahua Technology DHI-VTO3211D-P4-S2 video intercom system, Stainless steel on the Dahua Technology VTO6521K-S2 IP Apartment Door Station.

Viewing angle, horizontal
- DHI-VTO3211D-P4-S2 video intercom system:129°
- VTO6521K-S2 IP Apartment Door Station:95°
Viewing angle, vertical
- DHI-VTO3211D-P4-S2 video intercom system:74°
- VTO6521K-S2 IP Apartment Door Station:50°
Voice codecs
- DHI-VTO3211D-P4-S2 video intercom system:G.711
- VTO6521K-S2 IP Apartment Door Station:G.711a, G.711u, PCM
Product colour
- DHI-VTO3211D-P4-S2 video intercom system:Grey
- VTO6521K-S2 IP Apartment Door Station:Stainless steel
Operating relative humidity (H-H)
- DHI-VTO3211D-P4-S2 video intercom system:10 - 95%
- VTO6521K-S2 IP Apartment Door Station:0 - 90%
Operating temperature (T-T)
- DHI-VTO3211D-P4-S2 video intercom system:-40 - 60 °C
- VTO6521K-S2 IP Apartment Door Station:-30 - 60 °C
Width
- DHI-VTO3211D-P4-S2 video intercom system:101 mm
- VTO6521K-S2 IP Apartment Door Station:406 mm
Depth
- DHI-VTO3211D-P4-S2 video intercom system:30 mm
- VTO6521K-S2 IP Apartment Door Station:143 mm

Side by side

Differences highlightedShow differences only

Comparison of DHI-VTO3211D-P4-S2, VTO6521K-S2
54 specifications	A Dahua Technology DHI-VTO3211D-P4-S2 video intercom system Model DHI-VTO3211D-P4-S2 View product	B Dahua Technology VTO6521K-S2 IP Apartment Door Station Model VTO6521K-S2 View product
Featuresidentical
Connectivity technology	Wired	Wired
ColourKnown for one	Yes	Unknown — not stated by the source
Speakerphone	Yes	Yes
RFID readerKnown for one	Yes	Unknown — not stated by the source
Built-in microphoneKnown for one	Yes	Unknown — not stated by the source
Number of buttonsKnown for one	4 buttons	Unknown — not stated by the source
Video codecsKnown for one	H.264	Unknown — not stated by the source
Wall mountableKnown for one	Yes	Unknown — not stated by the source
Echo cancellationKnown for one	Unknown — not stated by the source	Yes
Night visionidentical
Night visionKnown for one	Yes	Unknown — not stated by the source
Camera2 differ
Megapixel (approx.)	2 MP	2 MP
Sensor type	CMOS	CMOS
Optical sensor size	25.4 / 2.8 mm (1 / 2.8")	25.4 / 2.8 mm (1 / 2.8")
Field of view (FOV) angleKnown for one	147°	Unknown — not stated by the source
Viewing angle, horizontalDiffers	129°	95°
Viewing angle, verticalDiffers	74°	50°
Supported video modesKnown for one	Unknown — not stated by the source	720p, 1080p
Maximum frame rateKnown for one	Unknown — not stated by the source	25 fps
Audio1 differ
Built-in speaker(s)	Yes	Yes
Voice codecsDiffers	G.711	G.711a, G.711u, PCM
Noise-cancelingKnown for one	Unknown — not stated by the source	Yes
Design1 differ
Product colourDiffers	Grey	Stainless steel
IK codeKnown for one	IK08	Unknown — not stated by the source
International Protection (IP) code	IP65	IP65
Outdoor unit housing materialKnown for one	Zinc alloy	Unknown — not stated by the source
Control typeKnown for one	Buttons	Unknown — not stated by the source
Proper useKnown for one	Outdoor	Unknown — not stated by the source
Network1 differ
Ethernet interface type	Fast Ethernet	Fast Ethernet
Ethernet LAN data rates	10,100 Mbit/s	10,100 Mbit/s
Cabling technologyKnown for one	10/100Base-T(X)	Unknown — not stated by the source
Power over Ethernet (PoE)Known for one	Yes	Unknown — not stated by the source
Supported network protocolsDiffers	SIP; P2P; IPv4; DNS; RTSP; RTP; TCP; UDP	FTP;RTMP;HTTP/HTTPS;DNS;RTSP;SSH;ONVIF;SIP;RTP
Ethernet LAN (RJ-45) portsKnown for one	Unknown — not stated by the source	1
Softwareidentical
Operating system installed	Linux	Linux
Poweridentical
Outdoor unit power typeKnown for one	DC	Unknown — not stated by the source
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
Operational conditions2 differ
Operating relative humidity (H-H)Differs	10 - 95%	0 - 90%
Operating temperature (T-T)Differs	-40 - 60 °C	-30 - 60 °C
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 dataidentical
Indoor unit included	Yes	Yes
Outdoor unit includedKnown for one	Yes	Unknown — not stated by the source
Package weightKnown for one	660 g	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
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
Technical detailsidentical
CertificationKnown for one	Unknown — not stated by the source	CE

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 DHI-VTO3211D-P4-S2 video intercom system vs Dahua Technology VTO6521K-S2 IP Apartment Door Station

Key differences

Side by side

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