Four-wire Connecting 4 Inch Black and White Visual Doorbell

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Four-wire Connecting 4 Inch Black and White Visual Doorbell

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      • Specifications:

      • Villa-type hand-held black and white video interphone
      • Four-wire connection
      • Wall-mounted, wiring simple, easy to install
      • It can be connected to the imagestore
      • Easy to use & maintenance
      • Visitor calls, hands-free
      • Visual two-way intercom
      • Unlocking, monitor
      • Manual deterrent alarm
      • IR night vision
      • Diphonia ringback
      • Time-lapse auto power-off
      • Support audio / video output
      • Power supply: AC110V ~ 240V
      • Standby power / Work power: < 0.5W / ≦ 10W
      • Receiver sensitivity: -60DB + / - 4%
      • Video input / output: 1Vp-p / 1Vp-p, 75Ω
      • Display: 4 inch black and white super A flat tube
      • Resolution( H x V ): 480 x 234
      • Audio frequency response: 500-3000HZ
      • Operating temperature: -15 degree to +50 degree
      • The timing of surveillance / intercom: 1 minute / 2 minutes
      • Overall dimensions:
        - Indoor unit( L x W x H ): 225 x 190 x 62 mm
        - Gate machine( L x W x H ): 160 x 70 x 26mm
      • Ringing mode: diphonia "ding-dong" sound
      • Matching methods: one to one, one to two
      • Approved: CE / FCC
      • After sales service: 1 year warranty
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