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Product comparison · 2 video intercom systems

Dahua Technology DHI-VTO3211D-P4-S2 video intercom system vs Dahua Technology VTO6521K video intercom system

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  • 32specifications compared
  • 12differ
  • 20identical
  • 33known for one product only

Key differences

The Dahua Technology DHI-VTO3211D-P4-S2 video intercom system has 42.6° more viewing angle, horizontal than the Dahua Technology VTO6521K video intercom system (129° vs 86.4°). The Dahua Technology DHI-VTO3211D-P4-S2 video intercom system has 27.8° more viewing angle, vertical than the Dahua Technology VTO6521K video intercom system (74° vs 46.2°). The Dahua Technology VTO6521K video intercom system has 42 mm more width than the Dahua Technology DHI-VTO3211D-P4-S2 video intercom system (143 mm vs 101 mm). Only the Dahua Technology DHI-VTO3211D-P4-S2 video intercom system has colour. 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 video intercom system.

  • Colour
    • Yes
    • No
  • Viewing angle, horizontal
    • 129°
    • 86.4°
  • Viewing angle, vertical
    • 74°
    • 46.2°
  • Voice codecs
    • G.711
    • G.711a, G.711u, PCM
  • Product colour
    • Grey
    • Stainless steel
  • Operating relative humidity (H-H)
    • 10 - 95%
    • 10 - 90%
  • Operating temperature (T-T)
    • -40 - 60 °C
    • -30 - 60 °C
  • Width
    • 101 mm
    • 143 mm

Side by side

Differences highlightedShow differences only
65 specifications
A

Dahua Technology

DHI-VTO3211D-P4-S2 video intercom system

Model DHI-VTO3211D-P4-S2

View product
B

Dahua Technology

VTO6521K video intercom system

Model VTO6521K

View product
Features1 differ
Connectivity technologyWiredWired
ColourDiffersYesNo
Maximum number of cameras supportedKnown for one1
SpeakerphoneYesYes
RFID readerYesYes
Fingerprint readerKnown for oneYes
Automatic gain controlKnown for oneYes
Built-in microphoneYesYes
Door station controlKnown for oneYes
Motion detection functionKnown for oneYes
VoIP protocolsKnown for oneRTSP, DNS, P2P, UPnP, RTP, RTMP, SIP, SSH, HTTP/HTTPS, ONVIF
Wall mountableYesYes
Number of buttonsKnown for one4 buttons
Video codecsKnown for oneH.264
Displayidentical
Display diagonalKnown for one10.9 cm (4.3")
Display technologyKnown for oneLCD
Display resolutionKnown for one800 x 480 pixels
TouchscreenKnown for oneNo
Video formats supportedKnown for oneH.264
Camera2 differ
Megapixel (approx.)2 MP2 MP
Supported video modesKnown for one720p, 1080p
Sensor typeCMOSCMOS
Optical sensor size25.4 / 2.8 mm (1 / 2.8")25.4 / 2.8 mm (1 / 2.8")
Maximum frame rateKnown for one30 fps
Viewing angle, horizontalDiffers129°86.4°
Viewing angle, verticalDiffers74°46.2°
Field of view (FOV) angleKnown for one147°
Audio1 differ
Built-in speaker(s)YesYes
Noise-cancelingKnown for oneYes
Voice codecsDiffersG.711G.711a, G.711u, PCM
Design1 differ
Product colourDiffersGreyStainless steel
IK codeIK08IK08
International Protection (IP) codeIP65IP65
Control typeButtonsButtons
Housing materialKnown for oneStainless steel
Placement supportedKnown for oneVertical
Proper useOutdoorOutdoor
Outdoor unit housing materialKnown for oneZinc alloy
Network1 differ
Ethernet interface typeFast EthernetFast Ethernet
Ethernet LAN data rates10,100 Mbit/s10,100 Mbit/s
Ethernet LAN (RJ-45) portsKnown for one1
Cabling technology10/100Base-T(X)10/100Base-T(X)
Power over Ethernet (PoE)YesYes
Supported network protocolsDiffersSIP; P2P; IPv4; DNS; RTSP; RTP; TCP; UDPRTSP, DNS, P2P, UPnP, RTP, RTMP, SIP, SSH, HTTP/HTTPS, ONVIF
Softwareidentical
Operating system installedLinuxLinux
Poweridentical
Outdoor unit power typeDCDC
AC adapter output voltageKnown for one12 V
AC adapter output currentKnown for one2 A
Power consumptionKnown for one200 mA
Power consumption (typical)Known for one18 W
Power consumption (standby)Known for one5 W
Operational conditions2 differ
Operating relative humidity (H-H)Differs10 - 95%10 - 90%
Operating temperature (T-T)Differs-40 - 60 °C-30 - 60 °C
Weight & dimensions3 differ
WidthDiffers101 mm143 mm
DepthDiffers30 mm54 mm
HeightDiffers182 mm406 mm
WeightKnown for one800 g
Packaging data1 differ
Outdoor unit includedYesYes
Package weightDiffers660 g2.05 kg
Indoor unit includedKnown for oneYes
Logistics dataidentical
Quantity per packKnown for one1 pc(s)
Minimum order quantityKnown for one1 pc(s)
Technical detailsidentical
Compliance certificatesKnown for oneCE, Federal Communications Commission (FCC)
Sustainability complianceKnown for oneYes
Night visionidentical
Night visionKnown for oneYes

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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