Features

• Features of NAS-8521A IP intercom controller:
  a. Equipped with 1×3.5mm Recording Output interface, can be connected to DVR/NVR for audio recording.
  b. Equipped with 2×Alarm Input and 2×Alarm Output interface for external linkage with emergency button, infrared detector, smoke detector, alarm light or electronic door lock.
  c. Supporting local triggering the broadcasting of the audio files in the SD card via alarm signal (e.g. voice messages to remind the user of security issues during withdrawal).
  d. Optional: 2×10W digital amplifier module (can be used for local sound reinforcement of background music or security warning messages by connecting external passive speakers).
  e. Equipped with standard RJ45 interface, accessible to the system wherever Ethernet is available, supporting cross-segment and cross-router.
  
  
• Features of NAS-8521B/C IP intercom panel:
  a. Providing single button & dual button panels for options.
  b. Adopting full metal case and leakproof structure, secure and solid.
  c. Supporting embedded installation or wall-mounted installation.
  d. Supporting tamper alarm function, being able to activate warning siren whenever the equipment has been forcibly damaged.
  e. Protection grade could reach IP54.
  f. Supporting one-touch calling to the target intercom terminal (by presetting the calling target on the server) to realize full duplex intercom.
  g. Available for custom settings of ringtones (including “calling through”, “busy line” and “target hang up”) by copying corresponding audio files to the SD card.
  h. Built-in 3W speaker and microphone, available for hands-free calls.