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Using an Intercom as a 1-Door Access Controller
Using an Intercom as a 1-Door Access Controller
Updated over a week ago

Hardware Setup

Reader

The TD52 is rated to power Verkada readers at 12V and 250mA via the (+) and (-) connection. It is recommended that the drain wire be connected to earth ground at the reader side.

Note: 12V power should not be used to power other peripheral devices, as it has latch-off current limiting.

Inputs

The TD52 has two general purpose dry inputs. The default input state (NC or NO) for each can be configured in Command. For each input, one wire should be connected to the IN pin, and the other to the GND pin. You can connect any device with a dry relay output to these ports, such as DPI, REX sensor, intercom, or access control output. All associated events will be logged in Command.

Output

The TD52 has one dry form C relay output, which can be configured as an access controller by connecting an access power controller to the output terminal as detailed below. The output relay can also be used as a general purpose output. For fail safe locks, + should be connected to NC to be locked by default. For fail secure locks, + should be connected to NO to be locked by default.

Command Setup

Adding a Door to the Intercom

To configure a door, follow the following process

  1. Select the Devices tab from the All Products menu

  2. Find the intercom you are adding a door to and select it

  3. Navigate to the Settings page for the intercom

  4. Navigate to the Door section of the settings menu

  5. Click Add a door

  6. Select the option for Directly to the Intercom

Unlock Settings

  • Unlock time - how long the door remains unlocked before re-locking. The default is 10 seconds (configurable 1 to 60 seconds. This affects both card scan unlocks and keypad pin unlocks).

  • NFC Card Unlock - Toggle on if NFC Card Unlock is desired

  • Remote Unlock - Toggle on to allow eligible Verkada Pass users to unlock this door via the Pass app

Bluetooth Settings

  • Bluetooth Unlock - Toggle on to allow eligible Verkada Pass users to unlock this door via Bluetooth

  • Unlock Proximity - Set unlock proximity

    • Immediate: phone needs to touch the reader

    • Near: The phone needs to be around 2 to 3 ft from the reader

    • Far: The phone needs to be around 7 to 8 ft from the reader

    • Custom: set your own RSSI value

  • Remote Unlock - Toggle on to allow eligible Verkada Pass users to unlock this door via the Pass app

  • Bluetooth Cooldown - Set the interval between Bluetooth door unlocks

  • Beep on Bluetooth Unlock - Eligible Verkada reader will beep when unlocked via Bluetooth

I/O Settings (REX/DPI)

DPI - Toggle on if a DPI, door position indicator, is installed. Can be configured using Input 1 of the intercom by selecting the DPI (Door Position Indicator) option from the drop-down menu.

  • Ignore DPI relock - The door will not relock when the DPI sends an opened signal

  • Monitor DHO - Triggers an event when a door is held open

  • DHO Threshold - The time it takes to trigger a DHO event

REX - Toggle on if a REX, request to exit button, is installed. Can be configured using Input 2 of the intercom by selecting the REX (Request to Exit) option from the drop-down menu.

  • REX Unlocks Door - When the REX is triggered, unlock the door

  • Duration of REX Unlock - How long to keep the door unlocked when REX unlocked

  • Monitor DFO - Toggle on if the door should alert if forced open

  • How long to delay DFO events after a valid door open - Set how long the door should be held open before an alert is sent

Assigning Users Access to the Intercom Door

After a door has been added to an intercom in Command, it can be assigned to access levels in the access control menu like any other door. Please reference this KB for more information.

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