• System parameters
• Operating systemEmbedded Linux operation system

• Device interfaces
• Network interfaceTwo-wire interface
• Two-wire interface4
• RS-485 1 (inter-module connection)
• Signal indicator 4
• Alarm input1
• Power indicator1
• Reset1

• Door station/System parameters
• ProcessorEmbedded microcontroller
• Operation systemEmbedded Linux operation system
• Processor basic frequency1 GHz
• Memory128 MB
• Operation modeOne touch key
• ROM16 MB

• Door station/Capacity parameters
• Sub door station capacity16

• Face Recognition Terminal/General
• Working temperature-40 °C to 60 °C (-40 °F to 140 °F)
• Working humidity10% to 90%
• Dimension98 mm × 99.8 mm × 43.9 mm (3.86" × 3.93" × 1.73")
• InstallationWall mounting
• Protection level IP 65
• Button1
• Power input24 VDC two-wire power supply (< 16 W)

• Indoor station/Audio parameters
• Audio inputBuilt-in omnidirectional microphone
• Audio outputBuilt-in loudspeaker
• Audio qualityNoise suppression and echo cancellation
• Volume adjustmentLocal or software control
• Audio compression standardG.711 U, G.711 A
• Audio compression Rate64 Kbps

• Indoor station/Network parameters
• Wired network Two-wire network
• Wireless networkWi-Fi 802.11b/g/n
• ProtocolTCP/IP, SIP, RTSP

• Indoor station/Device interfaces
• RS-4851
• Alarm input8 zones alarm input
• Relay output2
• TF cardSupport, Max. 32 GB

• Indoor station/General
• Power supplyTwo-wire
• Power consumption≤ 6 W
• Working temperature-10 °C to 50 °C (14 °F to 122 °F)
• Working humidity10% to 90%
• Dimensions (W × H × D)200 mm × 140 mm × 15.1 mm (7.87" × 5.51" × 0.59")

• Video Audio Distributor/General
• Power supplyTwo-wire mode
• Power consumptionCH1 to CH3＜6 W, CH4＜8 W
• Working temperature-10 °C to +50 °C (14 °F to +122 °F)
• Working humidity10% to 90%
• Digital noise reduction Support
• Dimension143.7mm × 92.4mm × 65.9mm (5.66" × 3.64" × 2.59")