Digi TransPort LR54 Application guide

Digi LR54
Hardware reference

Revision history—90002271
Revision Date Description
A December 2017 Removed hardware information from the Digi WR Routers User
Guide and released hardware reference information for the Digi
LR54 in this new guide.
Trademarks and copyright
Digi, Digi International, and the Digi logo are trademarks or registered trademarks in the United
States and other countries worldwide. All other trademarks mentioned in this document are the
property of their respective owners.
© 2019 Digi International Inc. All rights reserved.
Disclaimers
Information in this document is subject to change without notice and does not represent a
commitment on the part of Digi International. Digi provides this document “as is,” without warranty of
any kind, expressed or implied, including, but not limited to, the implied warranties of fitness or
merchantability for a particular purpose. Digi may make improvements and/or changes in this manual
or in the product(s) and/or the program(s) described in this manual at any time.
Warranty
To view product warranty information, go to the following website:
www.digi.com/howtobuy/terms
Customer support
Gather support information: Before contacting Digi technical support for help, gather the following
information:
Product name and model
Product serial number (s)
Firmware version
Operating system/browser (if applicable)
Logs (from time of reported issue)
Trace (if possible)
Description of issue
Steps to reproduce
Contact Digi technical support: Digi offers multiple technical support plans and service packages.
Contact us at +1 952.912.3444 or visit us at www.digi.com/support.
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Digi LR54 Hardware Reference 2

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Digi LR54 Hardware Reference 3

Contents
Digi LR54/LR54W
Digi LR54/LR54W key features 7
Digi LR54/LR54W hardware specifications 7
Digi LR54 front and back views 8
Digi LR54 Mounting options 8
Attach mounting brackets to the device 9
Mount the Digi LR54 on a wall 10
Hang the Digi LR54 on a wall 10
Digi LR54/LR54W serial connector pinout 11
Digi LR54 LEDs 12
Power 12
WWAN Signal 12
WWAN Service 12
SIM1 12
SIM 2 12
Wi-Fi 2.4 GHz LED (Wi-Fi models only) 13
Wi-Fi 5 GHz LED (Wi-Fi models only) 13
Ethernet 1-4 Link and Activity (on rear panel) 13
Tips for improving cellular signal strength 13
Reset the device to factory defaults 13
Digi LR54 regulatory and safety statements
RF exposure statement 16
Federal Communication (FCC) Part 15 Class B 16
Radio Frequency Interference (RFI) (FCC 15.105) 16
European Community - CE Mark Declaration of Conformity (DoC) 16
CE mark (Europe) 16
Maximum transmit power for radio frequencies 17
Innovation, Science, and Economic Development Canada (IC) certifications 18
RoHS compliance statement 18
Safety statements 19
Important Safety Information 19
5.10 Ignition of Flammable Atmospheres 19
Warnings for Use of Wireless Devices 19
Potentially Hazardous Atmospheres 20
Safety in Aircraft 20
Safety in Hospitals 20
Pacemakers 20
Persons with Pacemakers: 20
Digi LR54 Hardware Reference 4

Digi LR54 Hardware Reference 5
Certifications
International EMC (Electromagnetic Compatibility) and safety standards 21

Digi LR54/LR54W
Digi LR54/LR54W key features 7
Digi LR54/LR54W hardware specifications 7
Digi LR54 front and back views 8
Digi LR54 Mounting options 8
Digi LR54/LR54W serial connector pinout 11
Digi LR54 LEDs 12
Tips for improving cellular signal strength 13
Reset the device to factory defaults 13
Digi LR54 Hardware Reference 6

Digi LR54/LR54W Digi LR54/LR54W key features
Digi LR54 Hardware Reference 7
Digi LR54/LR54W key features
The Digi LR54 is an LTE-Advanced (LTE-A) router.
Key features include:
nHigh-speed CAT6 LTE
nDual SIM cellular interfaces, providing redundancy
nPowerful 802.11ac Wi-Fi
n4-port Gigabit Ethernet with LAN and WAN support
nAutomated Wide-Area Network (WAN) failover/failback
nExtended operating temperature
nLocal command-line and web interfaces
nSuperior network performance management through Digi Remote Manager (DRM)
nGlobal deployment support
Digi LR54/LR54W hardware specifications
For a detailed list of Digi LR54 hardware specifications, see Digi LR54 specifications.

Digi LR54/LR54W Digi LR54 front and back views
Digi LR54 Hardware Reference 8
Digi LR54 front and back views
The following figures show front and back views of the Digi LR54.
1. Enclosure
2. Power
3. Ethernet connectors
4. SIM card slots
5. Cellular antennas
6. Wi-Fi antennas (Wi-Fi models only)
7. Serial port connector (Digi LR54/LR54W serial connector pinout)
8. LEDs (See Digi LR54 LEDs
9. Reset button (Reset the device to factory defaults)
10. Internal temperature sensor
Digi LR54 Mounting options
The Digi LR54 Wall-Mount Kit (part number 78000001) is available separately for wall-mounting. It
contains two mounting brackets and four screws. You will need to supply additional self-tapping
screws and sleeve anchors as needed.

Digi LR54/LR54W Digi LR54 Mounting options
Digi LR54 Hardware Reference 9
Attach mounting brackets to the device
1. Remove the four rubber feet from the bottom of the Digi LR54.
2. Using the four supplied M3x6mm screws, attach the mounting brackets.

Digi LR54/LR54W Digi LR54 Mounting options
Digi LR54 Hardware Reference 10
Mount the Digi LR54 on a wall
1. Align the Digi LR54 on wall.
2. Tighten self-tapping screws to wall through holes of mounting brackets. If mounting the device
on a concrete wall, use sleeve anchors.
Hang the Digi LR54 on a wall
Tighten two self-tapping screws to wall, but leave a small part of screw protruding from the wall.
To hang the Digi LR54 on the wall, center the holes of the mounting brackets on the two wall-mounted
screws.

Digi LR54/LR54W Digi LR54/LR54W serial connector pinout
Digi LR54 Hardware Reference 11
Digi LR54/LR54W serial connector pinout
Digi LR54 products are DCE devices. The pinout for the DB9 serial connector is as follows:
Signal name RS232 signal
DCE signal
direction DB9 pin number
Transmit Data TxD In 3
Receive Data RxD Out 2
Ready To Send RTS In 7
Clear to Send CTS Out 8
Data Set Ready DSR Out 6
Ground GND N/A 5
Data Carrier Detect DCD Out 1
Data Terminal Ready DTR In 4
Ring Indicate RI Out Not connected

Digi LR54/LR54W Digi LR54 LEDs
Digi LR54 Hardware Reference 12
Digi LR54 LEDs
The Digi LR54 has LEDs on the top front panel. The number of LEDs varies by model. During bootup, the
front-panel LEDs light up in sequence to indicate boot progress. For example, here are the LEDs for a
Digi LR54 (Wi-Fi model):
There are also several LEDs on the rear WAN/LAN connectors that indicate network link and activity.
Power
nOff: No power.
nBlue: Unit has power.
WWAN Signal
Indicates strength of cellular signal.
nOff: No service.
nYellow: Poor / Fair signal.
nGreen: Good / Excellent signal.
WWAN Service
Indicates the presence and level of cellular service running on the device.
nOff: No service.
nBlinking Green: 2G/3G/4G connection is coming up.
nSolid Yellow: 2G or 3G connection is up.
nSolid Green: 4G connection is up.
SIM1
Indicates use of the SIM card installed in SIM slot 1.
nOff: SIM 1 is not being used.
nSolid green: SIM 1 is being used or is coming up.
SIM 2
Indicates use of the SIM card installed in SIM slot 2.

Digi LR54/LR54W Tips for improving cellular signal strength
Digi LR54 Hardware Reference 13
nOff: SIM 2 is not being used.
nSolid green: SIM 2 is being used or is coming up.
Note SIM1 and SIM2 are never both on at the same time.
Wi-Fi 2.4 GHz LED (Wi-Fi models only)
Indicates state and activity on the Wi-Fi 2.4 GHz interface.
nOff: Wi-Fi 2.4 GHz interface is disabled.
nSolid green: Wi-Fi 2.4 GHz interface is enabled.
Wi-Fi 5 GHz LED (Wi-Fi models only)
Indicates state of and activity on the Wi-Fi 5 GHz interface.
nOff: Wi-Fi 5 GHz interface is disabled.
nSolid green: Wi-Fi 5 GHz interface is enabled.
Ethernet 1-4 Link and Activity (on rear panel)
The LEDs on the WAN/ETH1,ETH2,ETH3, and ETH4 ports indicate that the Ethernet network interface
is up and there is activity on the network interface.
nOff: No Ethernet link detected.
nSolid green: Ethernet link detected.
nBlinking green: Indicates Ethernet traffic.
Tips for improving cellular signal strength
If the signal strength LEDs or the signal quality for your device indicate Poor or No service, try the
following things to improve signal strength:
nMove the device to another location.
nTry connecting a different set of antennas, if available.
nPurchase a Digi Antenna Extender Kit:
lAntenna Extender Kit, 1m
lAntenna Extender Kit, 3m
Reset the device to factory defaults
Resetting the device to factory defaults performs the following actions:
nClears all configuration settings. When the device boots up again, it uses the configuration in
file config.fac. If the config.fac file has been deleted, the device regenerates the file with the
default Digi configuration.
nDeletes all user files including Python scripts.
nRegenerates SSH keys.

Digi LR54/LR54W Reset the device to factory defaults
Digi LR54 Hardware Reference 14
nClears event and system log files.
nCreates a new event in the event log indicating a factory reset.
To reset the device to factory defaults:
1. Locate the reset button on your device. For the Digi LR54, the Reset button is located beneath
the SIM card slot cover on the front panel, to the right of SIMslot 2. Remove the SIM cover to
access the Reset button.
2. Press and hold the Reset button for 5seconds. The device reboots automatically.
The device reset to factory defaults. Follow the instructions in the Digi LR54 Quick Start Guide to
reconfigure the device.

Digi LR54 regulatory and safety statements Reset the device to factory defaults
Digi LR54 Hardware Reference 15
Digi LR54 regulatory and safety statements
RF exposure statement 16
Federal Communication (FCC) Part 15 Class B 16
European Community - CE Mark Declaration of Conformity (DoC) 16
Maximum transmit power for radio frequencies 17
Innovation, Science, and Economic Development Canada (IC) certifications 18
RoHS compliance statement 18
Safety statements 19

Digi LR54 regulatory and safety statements RF exposure statement
Digi LR54 Hardware Reference 16
RF exposure statement
In order to comply with RF exposure limits established in the ANSI C95.1 standards, the distance
between the antenna or antennas and the user should not be less than 20 cm.
Federal Communication (FCC) Part 15 Class B
Radio Frequency Interference (RFI) (FCC 15.105)
The Digi LR54 has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to correct the interference by one or more of the following measures:
nReorient or relocate the receiving antenna.
nIncrease the separation between the equipment and the receiver.
nConnect the equipment into an outlet that is on a circuit different from the receiver.
nConsult the dealer or an experienced radio/TV technician for help.
Labeling Requirements (FCC 15.19)
The Digi LR54 complies with Part 15 of FCC rules. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
If the FCC ID is not visible when installed inside another device, then the outside of the device into
which the module is installed must also display a label referring to the enclosed module FCC ID.
Modifications (FCC 15.21)
Changes or modifications to this equipment not expressly approved by Digi may void the user’s
authority to operate this equipment.
European Community - CE Mark Declaration of Conformity (DoC)
Digi has issued Declarations of Conformity for the Digi LR54 concerning emissions, EMC, and safety.
For more information, see www.digi.com/resources/certifications.
Important note
Digi customers assume full responsibility for learning and meeting the required guidelines for each
country in their distribution market. Refer to the radio regulatory agency in the desired countries of
operation for more information.
CE mark (Europe)
The Digi LR54 is certified for use in several European countries. For information, visit
www.digi.com/resources/certifications.
If the Digi LR54 is incorporated into a product, the manufacturer must ensure compliance of the final
product with articles 3.1a and 3.1b of the RE Directive (Radio Equipment Directive). A Declaration of
Conformity must be issued for each of these standards and kept on file as described in the RE

Digi LR54 regulatory and safety statements Maximum transmit power for radio frequencies
Digi LR54 Hardware Reference 17
Directive (Radio Equipment Directive). Furthermore, the manufacturer must maintain a copy of the
(product name) user manual documentation and ensure the final product does not exceed the
specified power ratings, antenna specifications, and/or installation requirements as specified in the
user manual.
OEM labeling requirements
The 'CE' marking must be affixed to a visible location on the OEM product.
CE labeling requirements
The CE mark shall consist of the initials “CE” taking the following form:
nIf the CE marking is reduced or enlarged, the proportions given in the above graduated
drawing must be respected.
nThe CE marking must have a height of at least 5mm except where this is not possible on
account of the nature of the apparatus.
nThe CE marking must be affixed visibly, legibly, and indelibly.
Maximum transmit power for radio frequencies
The following tables show the maximum transmit power for frequency bands.

Digi LR54 regulatory and safety
statements
Innovation, Science, and Economic Development Canada (IC)
certifications
Digi LR54 Hardware Reference 18
Cellular frequency bands
Frequency bands Maximum transmit power
Cellular LTE 700 MHz
Cellular LTE 800 MHz
Cellular LTE 850 MHz
Cellular LTE 900 MHz
Cellular LTE 1700 MHz
Cellular LTE 1800 MHz
Cellular LTE 1900 MHz
Cellular LTE 2100 MHz
200 mW
Cellular LTE 2600 MHz
Cellular LTE 2300 MHz
Cellular LTE 2500 MHz
158.49 mW
Wi-Fi frequency bands
Frequency bands
Maximum
transmit power
The LR54 device supports 11 overlapping channels (channels 1-11) at 22 MHz or
40 MHz wide spaced at 5 MHz.
Centered at 2.412 MHz to 2.462 MHz.
651.784 mW
The LR54 device supports 4 overlapping channels (channels 36, 40, 44, and 48) at
22 MHz or 40 MHz or 80 MHz wide spaced at 5 MHz.
Centered at 5180 MHz to 5240 MHz
351.295 mW
Innovation, Science, and Economic Development Canada (IC)
certifications
This digital apparatus does not exceed the Class B limits for radio noise emissions from digital
apparatus set out in the Radio Interference Regulations of the Canadian Department of
Communications.
Le present appareil numerique n’emet pas de bruits radioelectriques depassant les limites applicables
aux appareils numeriques de la class B prescrites dans le Reglement sur le brouillage radioelectrique
edicte par le ministere des Communications du Canada.
RoHS compliance statement
All Digi International Inc. products that are compliant with the RoHS Directive (EU Directive
2002/95/EC and subsequent amendments) are marked as RoHS COMPLIANT. RoHS COMPLIANT
means that the substances restricted by the EU Directive 2002/95/EC and subsequent amendments
of the European Parliament are not contained in a finished product above threshold limits mandated
by EU Directive 2002/95/EC and subsequent amendments, unless the restrictive substance is subject
of an exemption contained in the RoHS Directive. Digi International Inc., cannot guarantee that
inventory held by distributors or other third parties is RoHS compliant.

Digi LR54 regulatory and safety statements Safety statements
Digi LR54 Hardware Reference 19
Safety statements
Important Safety Information
To avoid contact with electrical current:
nNever install electrical wiring during an electrical storm.
nNever install an Ethernet connection in wet locations unless that connector is
specifically designed for wet locations.
nUse caution when installing or modifying lines.
nUse a screwdriver and other tools with insulated handles.
nWear safety glasses or goggles.
nDo not place Ethernet wiring or connections in any conduit, outlet or junction box
containing electrical wiring.
nInstallation of inside wire may bring you close to electrical wire, conduit, terminals
and other electrical facilities. Extreme caution must be used to avoid electrical
shock from such facilities. Avoid contact with all such facilities.
nEthernet wiring must be at least 6 feet from bare power wiring or lightning rods and
associated wires, and at least 6 inches from other wire (antenna wires, doorbell
wires, wires from transformers to neon signs), steam or hot water pipes, and
heating ducts.
nDo not place an Ethernet connection where it would allow a person to use an
Ethernet device while in a bathtub, shower, swimming pool, or similar hazardous
location.
nProtectors and grounding wire placed by the service provider must not be
connected to, removed, or modified by the customer.
nDo not touch uninsulated Ethernet wiring if lightning is likely!
nExternal Wiring: Any external communications wiring installed needs to be
constructed to all relevant electrical codes. In the United States this is the National
Electrical Code Article 800. Contact a licensed electrician for details.
5.10 Ignition of Flammable Atmospheres
Warnings for Use of Wireless Devices
Observe all warning notices regarding use of wireless devices.

Digi LR54 regulatory and safety statements Safety statements
Digi LR54 Hardware Reference 20
Potentially Hazardous Atmospheres
Observe restrictions on the use of radio devices in fuel depots, chemical plants, etc. and areas where
the air contains chemicals or particles, such as grain, dust, or metal powders, and any other area
where you would normally be advised to turn off your vehicle engine.
Safety in Aircraft
Switch off the wireless device when instructed to do so by airport or airline staff. If the device offers a
‘flight mode’ or similar feature, consult airline staff about its use in flight.
Safety in Hospitals
Wireless devices transmit radio frequency energy and may affect medical electrical equipment. Switch
off wireless devices wherever requested to do so in hospitals, clinics, or health care facilities. These
requests are designed to prevent possible interference with sensitive medical equipment.
Pacemakers
Pacemaker manufacturers recommended that a minimum of 15 cm (6 inches) be maintained between
a handheld wireless device and a pacemaker to avoid potential interference with the pacemaker.
These recommendations are consistent with independent research and recommendations by Wireless
Technology Research.
Persons with Pacemakers:
nShould ALWAYS keep the device more than 15 cm (6 inches) from their pacemaker when turned
ON.
nShould not carry the device in a breast pocket.
nIf you have any reason to suspect that the interference is taking place, turn OFF your device.