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Product comparison · 2 video intercom systems

Dahua Technology VTO3211D-P1-S2 video intercom system vs Dahua Technology VTO6521H-D video intercom system

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  • 45specifications compared
  • 16differ
  • 29identical
  • 24known for one product only

Key differences

The Dahua Technology VTO3211D-P1-S2 video intercom system has 15.21° more viewing angle, horizontal than the Dahua Technology VTO6521H-D video intercom system (129° vs 113.79°). The Dahua Technology VTO3211D-P1-S2 video intercom system has 12.5° more viewing angle, vertical than the Dahua Technology VTO6521H-D video intercom system (74° vs 61.5°). The Dahua Technology VTO6521H-D video intercom system has 1 A more AC adapter output current than the Dahua Technology VTO3211D-P1-S2 video intercom system (2 A vs 1 A). Optical sensor size: 25.4 / 2.8 mm (1 / 2.8") on the Dahua Technology VTO3211D-P1-S2 video intercom system, 25.4 / 2.7 mm (1 / 2.7") on the Dahua Technology VTO6521H-D video intercom system. Voice codecs: G.711Mu, G.711u, PCM on the Dahua Technology VTO3211D-P1-S2 video intercom system, G.711u on the Dahua Technology VTO6521H-D video intercom system.

  • Optical sensor size
    • 25.4 / 2.8 mm (1 / 2.8")
    • 25.4 / 2.7 mm (1 / 2.7")
  • Viewing angle, horizontal
    • 129°
    • 113.79°
  • Viewing angle, vertical
    • 74°
    • 61.5°
  • Voice codecs
    • G.711Mu, G.711u, PCM
    • G.711u
  • Product colour
    • Black, Grey
    • Silver
  • Control type
    • Buttons
    • Buttons, Touch
  • Operating system installed
    • Embedded LINUX
    • Linux
  • AC adapter output current
    • 1 A
    • 2 A

Side by side

Differences highlightedShow differences only
69 specifications
A

Dahua Technology

VTO3211D-P1-S2 video intercom system

Model VTO3211D-P1-S2

View product
B

Dahua Technology

VTO6521H-D video intercom system

Model VTO6521H-D

View product
Featuresidentical
Connectivity technologyWiredWired
Number of displays supportedKnown for one1
Maximum number of cameras supported11
SpeakerphoneYesYes
RFID readerYesYes
Fingerprint readerKnown for oneYes
Automatic gain controlKnown for oneYes
Built-in microphoneYesYes
Door station controlKnown for oneYes
Motion detection functionYesYes
VoIP protocolsSIP, P2P, IPv4, FTP, UPnP, DNS, DDNS, RTSP, RTP, TCP, UDPSIP, P2P, IPv4, FTP, UPnP, DNS, DDNS, RTSP, RTP, TCP, UDP
Wall mountableYesYes
ColourKnown for oneNo
Echo cancellationKnown for oneYes
Number of buttonsKnown for one2 buttons
Displayidentical
Display diagonalKnown for one10.9 cm (4.3")
Display technologyKnown for oneIPS
Display resolutionKnown for one800 x 480 pixels
Video formats supportedH.264H.264
Camera3 differ
Megapixel (approx.)2 MP2 MP
Supported video modesKnown for one720p, 1080p
Sensor typeCMOSCMOS
Optical sensor sizeDiffers25.4 / 2.8 mm (1 / 2.8")25.4 / 2.7 mm (1 / 2.7")
Maximum frame rateKnown for one30 fps
Viewing angle, horizontalDiffers129°113.79°
Viewing angle, verticalDiffers74°61.5°
Field of view (FOV) angleKnown for one147°
Audio1 differ
Built-in speaker(s)YesYes
Noise-cancelingKnown for oneYes
Voice codecsDiffersG.711Mu, G.711u, PCMG.711u
Design3 differ
Product colourDiffersBlack, GreySilver
International Protection (IP) codeIP65IP65
Control typeDiffersButtonsButtons, Touch
Housing materialDiffersAluminium, Metal, Polycarbonate (PC)Acrylonitrile butadiene styrene (ABS), Polycarbonate (PC)
Placement supportedVerticalVertical
Proper useOutdoorOutdoor
IK codeKnown for oneIK08
Outdoor unit housing materialKnown for oneAluminium
Storageidentical
Memory card slotKnown for oneYes
Maximum memory card sizeKnown for one4 GB
Included memory card sizeKnown for one1 GB
Networkidentical
Ethernet interface typeFast EthernetFast Ethernet
Ethernet LAN data rates10,100 Mbit/s10,100 Mbit/s
Ethernet LAN (RJ-45) ports11
Cabling technology10/100Base-T(X)10/100Base-T(X)
Power over Ethernet (PoE)YesYes
Supported network protocolsSIP, P2P, IPv4, FTP, UPnP, DNS, DDNS, RTSP, RTP, TCP, UDPSIP, P2P, IPv4, FTP, UPnP, DNS, DDNS, RTSP, RTP, TCP, UDP
Software1 differ
Operating system installedDiffersEmbedded LINUXLinux
Power3 differ
Outdoor unit power typeDCDC
AC adapter output voltage12 V12 V
AC adapter output currentDiffers1 A2 A
Power consumptionKnown for one100 mA
Power consumption (typical)Differs7 W18 W
Power consumption (standby)Differs1 W5 W
Operational conditions1 differ
Operating relative humidity (H-H)Differs10 - 95%10 - 90%
Operating temperature (T-T)-30 - 60 °C-30 - 60 °C
Weight & dimensions4 differ
WidthDiffers101 mm145.5 mm
DepthDiffers31 mm43.5 mm
HeightDiffers181 mm388.5 mm
WeightDiffers660 g1 kg
Packaging dataidentical
Outdoor unit includedYesYes
Package weightKnown for one1.29 kg
Indoor unit includedKnown for oneYes
Logistics dataidentical
Quantity per pack1 pc(s)1 pc(s)
Minimum order quantity1 pc(s)1 pc(s)
Technical detailsidentical
Compliance certificatesCE, Federal Communications Commission (FCC)CE, Federal Communications Commission (FCC)
Sustainability complianceYesYes
Night visionidentical
Night visionKnown for oneYes
LED typeKnown for oneIR

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.

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