Predor Sentinel D4 – Controller Unit for 4 doors

Main features:

  • Stand-alone or server-managed operation either
  • 130,000 events and 40,000 IDs can be stored
  • Up to 4 doors can be controlled (types and directions are freely configurable)
  • Automatic network discovery
  • Scheduled battery test if installed with Predor intelligent power supply
  • 2 programmable inputs
  • 2 programmable relay outputs
  • Fire alarm and tamper inputs with advanced security level


The controller perfectly performs the access control tasks in stand-alone operating mode as well. The control unit stores the permissions, events and rules in its own memory, up to 40,000 IDs and 130,000 events.

Quick and easy configuration

With the support of the automatic network discovery, the client automatically finds the controllers connected to the network. You can even do the full setup of the system remotely, you only have to upload the settings on the site.

Easy installation

The system creates exact wiring diagram (installation guide) for each controller panel corresponding to the current settings. It is exportable and printable.

Programmable inputs and outputs

The programmable inputs and outputs provide numerous applications. You can use them for bag check, “do not disturb” signal for meetings or warn the visitors to pass back their cards, and so on.

Battery testing and battery fault signal

The Predor power supply continuously checks the battery status for the highest security and uninterrupted operation. The controller sends a warning in case of battery malfunction or low state-of-health.


Predor Brochure
(417 KB, PDF)

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