The face recognition terminal can connect external device, including access controller, secure door control unit or card reader via the RS-485 terminal.

1. Tap Comm. (Communication Settings) on the Home page to enter the Communication Settings page.
2. On the Communication Settings page, tap RS-485 to enter the RS-485 tab.
3. Select an external device according to your actual needs.
   Note:

   • Controller represents the access controller, Unit represents the secure door control unit and Reader represents the card reader.

   • Set the RS-485 address as 2 if you need to connect an access controller or card reader.

4. Tap to save the network parameters.
   Note:

   If you change the external device, and after you save the device parameters, the device will reboot automatically.