Installing/Registering the DR40

In this article, we'll cover the following:

• About the DR40
• Installation
  • Wiring Requirements and Diagrams
• Registration
  • With the DC20
  • For Standalone Use
    • Bluetooth Registration
    • QR Code Registration
• Setting Up Doorbell Notifications
  • Creating a Doorbell Rule
  • Deleting a Doorbell Rule
• Helpful Links
• Contact Support or Sales

Note: DR40 User Manual

About the DR40

The DR40 is Rhombus' five-in-one combination of a reader, camera, button, audio device, and relay. The relay can be used with a Doorbell Rule. This powerful device allows you to enter secured locations via mobile app credentials (NFC), wave to unlock (BLE), or physical key cards.

The device contains a camera that allows you to view footage via the Rhombus Console. It can also be used as an intercom to communicate with guests or delivery drivers.

As a standalone device, the camera, intercom system, and button (doorbell) can be used without connecting to a DC20 for badge reader functionality. 

Installation

• Communication: the DR40 communicates with an Access Controller (DC20) over RS-485 and uses the OSDP Protocol. It will be wired into the RS-485 ports on the DC20.
• Power (V+/V-): solid or stranded, minimum 18 AWG, 300 ft max run.
  • If PoE is used to power the DR40, V+/V- won't be used. To connect the DR40 to your network, you can run Cat5/6 directly to a PoE switch or through a PoE injector and connect it via Wi-Fi.
  • Power to the reader can be supplied using PoE or a 12-28VDC external power source. DR40 has a maximum current rating of 791 mA at 12VDC and cannot be powered directly by the DC20. 

Figure 1.) Example wiring diagram for the DR40 showing all available wires.

Wiring Requirements and Diagrams

• Data (A/B/GND): solid or stranded, twisted pair, minimum 24 AWG, 300 ft max run.
• Other: (COM/NO): solid or stranded, minimum 24 AWG, 300 ft max run.
• Note: Existing cables can potentially be re-used if they meet the minimum required AWG. Wiring methods used shall be in accordance with the National Electric Code, ANSI/NFPA 70. 

For more details, please reference the full DR40 manual.

• Connect the [A], [B] and [GND] lines of the DR40 to the corresponding terminals in the DC20.
• Note: We recommend you consult the appropriate federal, state, and local authorities for any relevant regulations at the time of installation. 

  Figure 2.) Wiring the DR40 into the DC20 controller. 

Figure 3.) Power to the DR40 can be supplied through PoE. Even if PoE is not used, an Ethernet connection is still required.

Figure 4.) Power can also be supplied using a 12-28VDC external power source. An ethernet connection is required. 

Figure 5.) The DR40 also comes equipped with one dry contact normally open relay. This can be used for externally powered devices rated up to 30VDC/DC, 1A max.

Registration

The DR40 can be used combined with the DC20 or as a standalone product. Depending on its use case, two different registration methods are available.

With the DC20

The DR40 will auto-register to your Rhombus console once it's connected to a DC20, assuming that the DC20 has a stable network connection.

To ensure this will happen, navigate to the "Settings" tab, select "Door Controllers," and click the controller you wish to verify. Ensure "Auto-register Readers" is toggled on in the RS-485 Ports section (this is toggled on by default).

For Standalone Use

Once the DR40 has been installed, you can register it through the Rhombus mobile app via Bluetooth or via QR Code.

Bluetooth Registration

1. In the Rhombus App, select "Menu" and then select "Register Devices."

2. Select "Register via Bluetooth."

3. Select the location where you want to register the device. If the location hasn't been created yet, you can also "Add New Location."

4. Select the DR40 from the device list that you are trying to register. Click "Next."

5. Choose the Ethernet connection and select "Next."

6. Make sure the "Use DHCP" button is toggled on, and click next.

7. The next screen will be the final registration step.

QR Code Registration

1. In the Rhombus App, select "Menu" and then select "Register Devices."

2. Select "Register via QR Code."

3. Select the location where you want to register the device. If the location hasn't been created yet, you can also "Add New Location."

4. Next, aim the QR code displayed in the app at the camera lens on the DR40. You should hear a few clicks. 

Setting Up Doorbell Notifications

It's important to note that our doorbell sound is intentionally designed to be attention-grabbing without being disruptive. It serves to alert nearby individuals promptly, even if they're not actively monitoring the device.

Note: The doorbell volume is set to the maximum allowable level by default and further adjustments aren't possible.

To increase doorbell volume:

• Connect the device that is monitoring for notifications (an iPad etc.) to an external speaker to boost the sound of the notification.
  Note: When using an iPad or other device, the sound associated with a doorbell notification will only play if you are actively watching the specific door whose bell is rung.
• You can connect the DR40 Door Reader to a doorbell chime to boost the volume on the doorbell press. For more information, please see the article on Connecting a DR40 to a Wired Doorbell.

The DR40 has a button that can be used as a doorbell. Doorbell events can be set up in two ways:

• A Doorbell Rule can be created on the DR40 devices page and then configured in User Notifications. 
• A policy with "Doorbell Press" as part of the policy can be assigned and then configured in User Notifications. 
  • For more information on creating policies, please visit the Creating and Assigning Alert Policies article. 

Creating a Doorbell Rule

A Doorbell Rule can provide several different actions on button press:

• Generate Notification​
  • Generates an instant notification that will not be associated with any clips to reduce the time taken. Notifications for these can be configured under the "Manage Notifications" section in Settings by selecting the Video Intercom/Badge Reader dropdown and clicking "Doorbell Pressed."
• Play Audio File​

  • Play a previously saved clip, upload text-to-speech, create a new recording, or upload a recording. This can be used to play through a connected A100 or the DR40.

• Trigger Relay

  • The DR40 can be directly connected to a simple relay on the device. Its hardware includes a button configured as a doorbell and a generic relay. 

  • The DR40 is equipped with one dry contact Normally Open (NO) relay that can be used to control externally powered devices such as door chimes or lights rated up to 30 VAC/DC, 1A max. ​

Deleting a Doorbell Rule

1. Once a Doorbell Rule has been created, you can delete it by selecting "Delete Rule" and confirming the deletion.

Helpful Links

• Rhombus Access Control Deployment Guide and Best Practices
• Installing/Registering the DC20
• DC20 Overview
• Installing/Registering the DR20
• User-Based Alert Notifications
• Creating and Assigning Alert Policies

Contact Support or Sales

Have more questions? Contact Rhombus Support at +1 (877) 746-6797 option 2 or support@rhombus.com.

Interested in learning more? Contact Rhombus Sales at +1 (877) 746-6797 option 1 or sales@rhombus.com.