DR40 Video Intercom User Manual
Revision 1.0 230727
System Overview
Equipped with a door reader, camera, and intercom, the DR40 makes it easy to monitor entry events, grant access, and seamlessly communicate with visitors.
DR40 Device Diagram
The DR40 features the following components:
- Video Reader
- Camera
- Light Sensor
- Microphone
- ToF (Time-of-Flight) Sensor
- IR LED (Internal)
- NFC Antenna
- Button
- Speaker
Included in the Box:
- DR40 Door Reader
- (2) Wall anchors
- (2) #8 FH wall screws
- (2) 8-32 outlet box screws
- (1) T6 Torx Key
- (1) Waterproofing Kit
Tools You'll Need:
- Phillips #2 screwdriver
- Pen or pencil for marking drill locations
- Power drill and 1/4” drill bit for wall anchors or 1/8” drill bit for screw pilot
- 1-3/8" hole saw
Mounting the DR40
STEP 1
To install, pre-drill pilot holes into the desired mounting surface in accordance with the mounting specifications provided (see Appendix). Note that a 3/16" pilot hole is required if using the wall anchors.
STEP 2
Remove the mounting bracket from the reader by unscrewing the T6 screw at the bottom of the device. Fasten the mounting bracket to the surface using the included wall screws and ensure that the arrow symbol on the bracket is pointing up.
STEP 3
After wiring is completed, pass the DR40 cables through the hole and slide the reader into the mounting bracket. Ensure that the tab at the top of the mounting bracket is inserted into the top slot of the DR40.
STEP 4
While holding the DR40 in place, insert and tighten the T6 screw into the bottom of the bracket using the torx key provided.
Recommended Wiring
Wiring methods used shall be in accordance with the National Electrical Code, ANSI/NFPA 70. All wiring of the DR40 should be performed prior to connecting power. Power should be removed before attempting to service the DR40 or any of its connected devices.
WARNING: Failure to remove power prior to servicing the DR40 may result in damage to connected devices.
Wire Type and Size
| Wire Type | Twisted Pair | Shielded | Minimum Size | Maximum Length | |
|---|---|---|---|---|---|
| Reader Power | Solid or Stranded | — | Yes | 18 AWG | 300 ft |
| Reader Data (RS-485) | Solid or Stranded | Yes | Yes | 24 AWG | 300 ft |
| Ethernet Line | — | — | — | — | 328 ft |
Video Intercom Power Options
If access control is not required, DR40 can be used as a standalone device to capture audio and video events. The DR40 can be powered using POE or a 12-28VDC, 12W power source.
Power over Ethernet (PoE): Connects via an Ethernet cable providing both data and power.
12-28VDC External Power Source: Connects via a dedicated power cable.
If powered remotely, the DR40 can connect to the network through Ethernet or Wi-Fi. Use a CAT5 or CAT6 cable with RJ45 connector and plug into the DR40 pigtail cable for Ethernet use.
Video Door Reader Connections
DR40 is compatible with the Rhombus DC20 Door Controller and communicates using OSDP protocol over RS-485. Connect the [A], [B] and [GND] lines of the DR40 to the corresponding terminals in the DC20.
Wiring Diagram for DC20 Connection: Illustrates connections between the DR40 and the DC20 controller, showing RS-485 (A, B, GND) and other potential connections.
Wiring Diagram for PoE Connection: Shows the DR40 connected via an Ethernet cable for PoE power and data.
Wiring Diagram for 12-28VDC Connection: Depicts the DR40 connected to an external 12-28VDC power source.
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, so should not be powered directly by the DC20. Always check the power requirements of the door controller prior to installation. If PoE is not used, an Ethernet or Wi-Fi connection is required. Refer to Recommended Wire Type and Size table above for more wiring detail.
Relay Functionality
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. Relay events can be configured in the Rhombus Console after registration.
Operation
Proximity Sensor
The DR40 proximity sensor allows for touch-free access using Bluetooth if set-up on the mobile app.
Accepted Credentials
DR40 is compatible with most NFC card types including mobile NFC for iPhone® and Android® devices. DR40 also facilitates Touchless Entry with your mobile device's Bluetooth, Location, and other onboard services.
Offline Mode
During a network disconnection, the DR40 will continue to record and save the footage to the onboard storage, while power is present. Access Control functionality is also preserved; however, user grants and schedules cannot be updated. Once the network connection has been restored, all alerts, movements, and access control configurations will be updated automatically.
Registration
Getting Started
To get started, scan the QR code provided with the DR40 or visit www.rhombus.com/setup/dr40.
[QR Code: Scan this code or visit www.rhombus.com/setup/dr40 to begin setup.]
Specifications
General
- Dimensions: Mullion 50 mm x 165 mm x 35.1 mm [1.97 in x 6.5 in x 1.38 in]
- Weight: 0.40kg (0.9lbs)
- Mounting: Wood/drywall screws Included
Credential
- Frequency: 13.56 MHz
- Credential Compatibility: Rhombus Badge, ISO 14443A (CSN), Rhombus Key app
Connectivity/Power
- Controller Compatibility: DC20
- Input Voltage: 802.3af or 11-28VDC
- Power Consumption MAX: 9.3W
Environmental
- Operating Temperature: -40°C to 50°C [-40°F to 122°F]
- Operating Humidity: 10%-90% RH
- Weather Resistance: IP65
Camera
- Image Sensor: 5MP sensor, 2688 x 1944 resolution
- Field of View: 155.2° Diagonal FoV, 118.4° Horizontal FoV, 86.4° FoV
Compliance
FCC, CE, RCM, AUS and NZ Compliant
Troubleshooting
Power Cycling
If the DR40 needs to be power cycled, remove the reader from the mounting bracket and unplug the device from the power source. Leave unplugged for around 30 seconds before reconnecting.
LED Indicators
The DR40 LED ring provides visual feedback on the device's status:
- White / OFF fade: Starting Up - Initial connection period, not yet fully available.
- Blue / OFF fade: Unregistered - Status not available.
- Red / White fade: ERR: No ACU - RS485 connection is down.
- Blue / OFF, fast fade: ERR: No network - Unable to access the internet.
- Blue / white, fast fade: ERR: No cloud - Able to access the internet, but not able to reach Rhombus.
- Dim white, steady: Await intent
- Spinning white: Awaiting authorization
- Single red flash: Authorization rejected
- Single blue / OFF fade: Doorbell pressed
Appendix
Mounting Dimensions
The mounting template requires holes with the following dimensions:
- Main mounting slot: Approximately 3 1/4" (83 mm) in height.
- Center hole for cables: 1-3/8" (35 mm) diameter.
- Screw pilot holes: Located at 1" (25.4 mm) from the center of the main slot, spaced appropriately for mounting.
DR40 LED Ring Patterns
Detailed feedback descriptions for the DR40 LED ring patterns:
| Color Pattern | Feedback Name | Feedback Description |
|---|---|---|
| White / OFF fade | Starting Up | Initial connection period, not yet fully available. |
| Blue / OFF fade | Unregistered | - |
| Red / White fade | ERR: No ACU | RS485 connection is down. |
| Blue / OFF, fast fade | ERR: No network | Unable to access the internet. |
| Blue / white, fast fade | ERR: No cloud | Able to access the internet, but not able to reach Rhombus. |
| Dim white, steady | Await intent | - |
| Spinning white | Awaiting authorization | - |
| Single red flash | Authorization rejected | - |
| Single blue / OFF fade | Doorbell pressed | - |