Page 1
User Guide
6641-2242
Viper-12
SERIES
X1
X2
SRV 1
X3
SRV 2
DC
X4
ON
RSTP
FRNT
DC
Westermo Teleindustri AB
©
X9
X5
X10
X6
X11
X7
X1
USB
X12
X8
X2
X3
CON
X4
X9
X5
X10
X6
X11
X7
X12
X8
12-port Ethernet M12 switch / GigE
www.westermo.com
Page 2
Software tools
Related software tools are available in the folder software tools under
technical support on the Westermo website.
License Information
This device contains public available software which is under the GPL license.
For more information see legal.pdf included with all firmware releases.
This product includes software developed by the OpenSSL Project for use in the
OpenSSL Toolkit. http://www.openssl.org
Legal information
The contents of this document are provided “as is”. Except as required by applicable
law, no warranties of any kind, either express or implied, including, but not limited to,
the implied warranties of merchantability and fitness for a particular purpose, are made
in relation to the accuracy and reliability or contents of this document. Westermo
reserves the right to revise this document or withdraw it at any time without prior
notice.
Under no circumstances shall Westermo be responsible for any loss of data or income
or any special, incidental, and consequential or indirect damages howsoever caused.
More information about Westermo can be found at the following Internet address:
http://www.westermo.com
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6641-2242
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Safety
!
!
Before installation:
Read this manual completely and gather all information on the unit. Make sure
that you understand it fully. Check that your application does not exceed the safe
operating specifications for this unit.
This unit should only be installed by qualified personnel.
This unit should be built-in to an apparatus cabinet, or similar, where access is
restricted to service personnel only. The power supply wiring must be sufficiently
fused, and if necessary it must be possible to disconnect manually from all power
supply. Ensure compliance to national installation regulations. This unit relies on
convection heating. Make sure that it is installed so that the ambient temperature
is within the specified temperature range, e.g. by avoiding obstruction of the
airflow around the unit. Also check chapter CEN/TS 45545-2 mounting notes.
Before mounting, using or removing this unit:
Prevent access to hazardous voltage by disconnecting the unit from all power supply.
WARNING
Do not open connected unit. Hazardous voltage may occur within this unit when
connected to power supply.
Before powering-up, a protective earthing conductor must be connected to the
protective earthing terminal and have a cross-sectional area of at least 1.5 mm².
Note that this unit can be connected to two different power sources.
When this unit is operated at an ambient temperature above +60°C (+140°F), the
External Surface of Equipment may exceed Touch Temperature Limit according to
EN/IEC/UL 60950-1. To reduce the risk of fire, use only No. 26 AWG or larger
telecommunication line cord.
6641-2242
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Care recommendations
Follow the care recommendations below to maintain full operation of unit and to fulfill
the warranty obligations:
… Do not attempt to dissassemble the unit. There are not any user serviceable
parts inside.
… Do not drop, knock or shake the unit. Rough handling above the specification
may cause damage to internal circuit boards.
… Do not use harsh chemicals, cleaning solvents or strong detergents to clean the
unit.
… Do not expose the unit to any kind of liquid (water, beverages, paint etc),
unless all connectors are connected or fitted with protective caps (delivered
with the unit), tightened to the specified torque. Connected cables must have
the appropriate ingress protection code.
… Do not use or store the unit in dusty or dirty areas, unless all connectors and
the ventilation membrane are sufficiently protected.
… Do not cover or bring mechanical force to the ventilation membrane on the
back of the unit.
If the unit is not working properly, contact the place of purchase, nearest Westermo
distributor office or Westermo Tech support.
Maintenance
No maintenance is required, as long as the unit is used as intended within the specified
conditions.
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Agency approvals and standards compliance
Type Approval / Compliance
EMC EN 61000-6-1, Immunity residential environments
EN 61000-6-2, Immunity industrial environments
EN 61000-6-3, Emission residential environments
EN 61000-6-4, Emission industrial environments
EN 55022, Emission IT equipment
EN 55024, Immunity IT equipment
EN 50121-3-2, Railway applications – Rolling stock – apparatus
EN 50121-4/IEC 62236-4, Railway signaling and telecommunications apparatus
FCC Part 15 Class B
Safety EN 60950-1, IT equipment
Environmental EN 61373
FCC Part 15.105
Notice:
Railway applications – Rolling stock equipment. Shock and vibration tests
IEEE 1478
Environmental conditions for transit rail car electronic equipment
EN 50124-1
Railway applications – Insulation coordination
EN 50155
Railway applications – Electronic equipment used on rolling stock
CEN/TS 45545-2
Fire safety standard
This equipment 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 partic ular 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 try to correct the interference by one
or more of the following measures:
… Reorient or relocate the receiving antenna
… Increase the separation between the equipment and receiver
… Connect the equipment into an outlet on a circuit different from that to which
the receiver is connected
… Consult the dealer or an experienced radio/TV technician for help.
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Declaration of Conformity
Westermo Teleindustri AB
Declaration of conformity
The manufacturer
Herewith declares that the product(s)
Type of product Model Art no
12-port unmanaged Ethernet M12 Switch Viper-012 3641-0540
12-port managed Ethernet M12 Switch Viper-112, -212 3641-0555, -0560
12-port managed Gig Ethernet M12 Switch Viper-112-T3G, -212-T3G 3641-0530, -0550
is in conformity with the following EC directive(s).
No Short name
2004/108/EC Electromagnetic Compatibility (EMC)
2006/95/EC Low Voltage (LVD)
2011/65/EU Restriction of the use of certain hazardous substances in electrical and electronic
References of standards applied for this EC declaration of conformity.
No Title Issue
EN 50121-3-2 Railway applications – Electromagnetic compatibility – Rolling stock -
EN 50121-4 Railway applications – Electromagnetic compatibility – Emission and immunity
EN 55022 Information technology equipment - Radio disturbance characteristics - Limits
EN 55024 Information technology equipment - Immunity characteristics - Limits and
EN 61000-6-1 Electromagnetic compatibility - Generic standards - Immunity for residential,
EN 61000-6-2 Electromagnetic compatibility - Generic standards - Immunity for industrial
EN 61000-6-3 Electromagnetic compatibility – Emission for residential environments 2007
EN 61000-6-4 Electromagnetic compatibility - Generic standards - Emission standard for
EN 60950-1 Information technology equipment – Safety – General require ments 2006
The last two digits of the year in which the CE marking was affixed: 12
Westermo Teleindustri AB
SE-640 40 Stora Sundby, Sweden
equipment (RoHS)
Apparatus
of the signaling and telecommunications apparatus
and methods of measurement
methods of measurement
commercial and light-industrial environments
environments
industrial environments
2006
2006
2006
+A1:2007
1998
+A1:2001
+A2:2003
2007
2005
+ A1:2011
2007
+A1:2011
+A11:2009
+A1:2010
+A12:2011
Telefax
Postgiro
Bankgiro Corp. identity number Registered office
Pierre Öberg
Technical Manager
st
21
December 2012
Org.nr/
Postadress/Postal address
S-640 40 Stora Sundby 016-428000 016-428001 52 72 79-4 5671-5550 556361-2604 Eskilstuna
Sweden Int+46 16428000 Int+46 16428001
Tel.
6
6641-2242
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Type tests and environmental conditions
Environmental phenomena Basic standard Description Test levels
ESD EN 61000-4-2 Enclosure Contact: ±6 kV
Fast transients EN 61000-4-4 Power port ±5 kV
Surge EN 61000-4-5 Power port L-E: ±0.5 kV, 12 Ω, 9 μF, 1.2/50 μs
Power frequency magnetic field EN 61000-4-8 Enclosure 300 A/m; 0, 16.7, 50, 60 Hz
Pulsed magnetic field EN 61000-4-9 Enclosure 300 A/m
Radiated RF immunity EN 61000-4-3 Enclosure 20 V/m @ (80 MHz – 2.7 GHz)
Conducted RF immunity EN 61000-4-6 Power port 10 V, 80% AM, 1 kHz; (0.15 – 80) MHz
Radiated RF emission EN 55022 Enclosure Class B
Conducted RF emission EN 55022 Power port Class B
Dielectric strength EN 60950-1 Power port
Environmental
Temperatures Operating –40 to +70°C (–40 to +158°F)*
Humidity Operating 5 to 95% relative humidity
Altitude Operating 2 000 m / 70 kPa
Service life Operating 15 years
MTBF Viper-012
Vibration IEC 60068-2-6
Shock IEC 60068-2-27 Operating 10 g, 30 ms
Bump IEC 60068-2-27 Operating 10 g, 11 ms
Enclosure EN 60950-1 Zinc Fire enclosure
Dimension W x H x D
With connectors
Weight 1.4 kg
Degree of protection EN 60529 Enclosure IP67**
Cooling Convection
* Refer to “Safety” section
** Provided all connectors are connected with IP67 cabling or fitted with protective caps (delivered with the unit),
tightened to the specified torque
FCC Part 15 Class B
(sine)
IEC 60068-64
(random)
Signal ports ±2 kV
Earth port ±1 kV
Ethernet ports L-E: ±2 kV, 2 Ω
Ethernet ports 10 V, 80% AM, 1 kHz; (0.15 – 80) MHz
Earth port 10 V, 80% AM, 1 kHz; (0.15 – 80) MHz
Ethernet ports Class B
to all other ports
Fast Ethernet ports
to all other ports
Gig Ethernet ports
to all other ports
Storage and transport –50 to +85°C (–58 to +185°F)
Storage and transport 5 to 95% relative humidity
636,000 hours
Viper-112/212
554,000 hours
Viper-112-T3G/212-T3G
484,000 hours
Non operating long
life simulation
Operating 1 m/s² (RMS) 5 – 150 Hz
Air: ±8 kV
L-L: ±0.5 kV, 2Ω, 18 μF, 1.2/50 μs
L-E: ±2 kV, 42 Ω, 0.5 μF, 1.2/50 μs
L-L: ±2 kV, 42Ω, 0.5 μF, 1.2/50 μs
L-E: ±8.4 kV, 100 Ω, 0.05/0.1 μs
L-L: ±8.4 kV, 100 Ω, 0.05/0.1 μs
1 kHz sine, 80% AM
1.5 kV ACrms, 50 Hz, 1 min
1.5 kVACrms, 50 Hz, 1 min
500 VACrms, 50 Hz, 1 min
MIL-C217F2, GB, 25°C (+77°F)
7.9 m/s² (RMS) 5 – 150 Hz
20 g, 11 ms
100 g, 6 ms
See "Dimensions" chapter for details
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Description
Designed for harsh industrial environments
The Viper-12 series is a series of managed and unmanaged rugged Ethernet switches
designed for applications with severe operating conditions and extreme environments.
With an ultra robust design, sealed to IP67 and vibration resistant to and exceeding
on-board rail standards these units are ideal for situations where mechanical stress,
moisture, condensation, dirt or continuous vibrations could adversely affect the function
of standard Ethernet switches. Fully approved for onboard rolling stock, these units can
be deployed in e.g. trains, trams, busses, mining trucks, army vehicles and drilling rigs.
Features for complete network management
Our unique FRNT technology is the fastest and most robust protocol on the market to
re-configure a large network in the event of any link or hardware failure. The Viper-12
series also supports STP/RSTP in case of need for standard protocol. IGMPv2/v3 with
stop filter and the unique Westermo protocol ’Fast Reconnect’ allows a video stream to
reconfigure very fast. Advanced functionality for VLANs with support for up to 64 virtual
networks, combined with real-time properties is implemented in the switch in order to
achieve determinism for real time critical applications.
Made easy and secure configuration
You can safely access your switch from anywhere in the network, or directly to the
product via a console port. The HTTPS secured web configuration interface has been
designed ’Made Easy’, setting up a redundant ring or a VLAN is just a few clicks away.
For more advanced configuration, you will find an SSH encrypted industry standard CLI
which allows extremely detailed settings. For safe handling and MIB readout the switch
is also equipped with SNMPv3.
Remark: Some of the features described above are not available
for the unmanaged model.
Product models
There are five different models in the Viper-12 series:
3641-0540 Viper-012 unmanaged switch.
3641-0555 Viper-112 managed switch with Layer 2 SW functions.
3641-0560 Viper-212 managed switch with Layer 3 SW functions.
3641-0530 Viper-112-T3G managed switch with Layer 2 SW functions and three GigE ports.
3641-0550 Viper-212-T3G managed switch with Layer 3 SW functions and three GigE ports.
8
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Interface specifications
DC, Power port
Rated voltage 24 to 110VDC
Operating voltage 16.8 to 143 VDC (14.4 to 154 VDC for 100 ms)
Rated current Max 0.52 A @24 V
Max 0.12 A @110 V
Rated frequency DC
Inrush current, I²t 1 mA²s @ 24 V and 6 mA²s @ 110 V
Startup current* 535 mA @ 24 V
145 mA @ 110 V
Polarity Reverse polarity protected
Redundant power input Yes
Isolation to 1500 VAC rms to all other
Connection 4 pin male M12 A-coded connector, use Westermo cable
3146-1106 for 1.5 m
3146-1107 for 5 m
Connector size M12, recommended cable area 0.5 mm² recommended
(minimum 0.25 mm²), cable dimensions depend on choice
of M12 connector
* External supply current capability for proper start-up
X1-X12 Ethernet ports*
Electrical specification IEEE std 802.3. 2005 Edition
Data rate 10 Mbit/s, 100 Mbit/s, manual or auto
Duplex Full or half, manual or auto
Circuit type Viper-x12:
X1-X12: TNV-1
Viper-x12-T3G:
X1-X3, X5-X7, X9-X11: TNV-1
X4, X8, X12: SELV
Transmission range Up to 150 m with CAT5e cable or better
Isolation to Viper-x12: 1500 VAC rms to all other ports
Viper-x12-T3G: X1-X3, X5-X7, X9-X11: 1500 VAC rms
to other ports
X4, X8, X12: 500 VAC rms to other ports
Connection 4-pin M12 D-code, auto MDI/MDI-X, use e g Westermo cable
3146-1100 M12-M12 – 1 m
3146-1101 M12-M12 – 5 m
3146-1103 RJ45-M12 – 1 m
3146-1104 RJ45-M12 – 5 m
Shielded cable Not required, but recommended in severe electromagnetic
environments
Conductive housing Yes
FRNT reconfiguration time** Typically below 20 ms
Number of ports 12
* X1-X3, X5-X7, X9-X11 on Viper-x12-T3G ** Not valid for Viper-012
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X4, X8, X12 Gigabit Ethernet ports
Data rate 10 Mbit/s, 100 Mbit/s, 1000 Mbit/s, manual or auto*
Connection 8-pin M12
Transmission range Up to 100 m with CAT5e cable or better
FRNT reconfiguration time Typically below 400 ms
* Note! Full wirespeed (1000 Mbit/s) is not possible between port X4 and the other Gigabit ports due to
hardware limitations.
USB, USB port
Electrical specification USB 2.0 host interface
Data rate Up to 480 Mbit/s (high-speed mode)
Maximum supply current 500 mA
Circuit type SELV
Isolation to Ethernet ports, 1500 VAC rms
DC, 1500 VAC rms
No isolation to CON
Connection 5-pin M12 female A-code, use Westermo USB plug 3641-0190
CON, Console port
Electrical specification RS-232
Data rate 115.2 kbit/s
Data format 8 data bits, no parity, 1 stop bit, no flow control
Circuit type SELV
Isolation to Ethernet ports, 1500 VAC rms
DC, 1500 VAC rms
No isolation to USB
Connection 5-pin M12 female B-code, use Westermo cable 1211-2215
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Location of interface ports and LED’s, Viper-012/112/212
Ethernet connection TX
LED indicators
(for details see page 15)
USB
connection
Console
connection
Earth
connection
ON
RSTP
FRNT
DC
X1
USB
X2
X3
CON
X4
Power connection
X9
X5
X6
X10
X11
X7
X8
X12
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Viper-112/212 Managed Viper-012 Unmanaged
X1
ON
USB
X2
RSTP
FRNT
X3
CON
DC
X4
USB
Pin number Signal
No 1 DN
No 2 VBUS
No 3 NC
No 4 DP
No 5 GND
CON
Pin number Signal
No 1 NC
No 2 TX
No 3 RX
No 4 NC
No 5 GND
X9
X5
X6
X10
X11
X7
X8
X12
Power
Pin number Signal
No 1 +DC1
No 2 +DC2
No 3 -COM
No 4 -COM
X1
SRV 1
X2
*
SRV 2
X3
DC
X4
X9
X5
X6
X10
X11
X7
X8
X12
* SRV 1 & SRV 2 only for internal use by Westermo staff
2 1
3 4
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Location of interface ports and LED’s, Viper-112/212-T3G
Ethernet connection TX
LED indicators
(for details see page 15)
USB
connection
Console
connection
6641-2242
Earth
connection
Power connection
GigE
13
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Viper-112-T3G / Viper-212-T3G
Ethernet connection
Pin number Signal
No 1 TD+
No 2 RX+
No 3 TX–
No 4 RD–
Housing Shield
Power connection
Pin number Signal
No 1 +DC1
No 2 +DC2
No 3 -COM
No 4 -COM
Viper-x12-T3G supports redundant power connection.
The positive inputs are +DC1 and +DC2, the negative
input for both supplies are –COM.
USB
Pin number Signal
No 1 DN
No 2 VBUS
No 3 NC
No 4 DP
No 5 GND
CON
Pin number Signal
No 1 NC
No 2 TX
No 3 RX
No 4 NC
No 5 GND
2 1
3 4
GigE X4, X8, X12
Pin number Signal
1 DA +
2 DA–
3 DB+
4 DB–
5 DD+
6 DD–
7 DC–
8 DC+
14
8
1
7
6
2
3
45
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Connection to console port
(Viper-112/212/112/212-T3G Managed only)
The console port can be used to connect to the CLI (Command Line Interface).
The following steps needs to be taken
1. Connect the serial diagnostic cable
(use Westermo cable 1211-2215 to the console port).
2. Connect cable to your computer serial port.
3. Use a terminal emulator and connect with correct speed and format (115200, 8N1)
to the assigned port.
For more information about the CLI, see the WeOS management guide.
Connection to USB port
(Viper-112/212/112/212-T3G Managed only)
The USB port can be used to copy configuration and log files to/from the switch.
The following steps needs to be taken
1. Connect the USB plug (use Westermo USB plug 3641-0190) to the USB port.
2. Access the switch CLI (via console cable or SSH)
3. Use the CLI ''copy'' command to copy files between the USB plug and the switch.
For more information about the CLI, see the WeOS management guide.
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LED Indicators
LED Status Description
ON OFF Unit has no power.
GREEN All OK, no alarm condition.
RED Alarm condition, or until unit
BLINK Location indicator ("Here I
DC OFF Unit has no power.
GREEN Power OK on DC1 and DC1.
RED Power failure on DC1 or DC2.
FRNT * OFF FRNT disabled.
GREEN FRNT OK.
RED FRNT Error.
BLINK Unit configured as FRNT Focal
RSTP* OFF RSTP disabled.
GREEN RSTP enabled.
BLINK Unit elected as RSTP/STP root
X1 to
OFF No Link.
X12
GREEN Link established.
GREEN
FLASH
YELLOW Port alarm and no link. Or if
* Not valid for Viper-012
has started up. (Alarm conditions
are configurable, see ''WeOS
Management Guide'').
am!"). Activated when connected
to IPConfig Tool, or when
configuring the unit via Web or
CLI.
Point.
switch.
Data traffic indication.
FRNT or RSTP mode, port is
blocked.
ON
RSTP
FRNT
DC
X1
USB
X2
X3
CON
X4
X9
X5
X6
X10
X11
X7
X8
X12
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Wall mounting
There are four 6 mm bore holes intended for mounting the unit. The unit can be
mounted vertical or horizontal. Use four M5 screws with 12 mm washer on a flat and
stable surface.
ON
RSTP
FRNT
DC
X1
USB
X2
X3
CON
X4
X9
X5
X10
X6
X11
X7
X8
X12
Connection of cables
Recommended tightening torque for the M12 connectors: 0.6 Nm
Note that unused connectors must be covered by a protective cap (delivered with the
unit), tightened to the specified torque, in order to fulfill the specified ingress protection
code.
Removal
Disconnect all cables and unscrew the unit from the wall.
Time For Replacement < 15 minutes
Cooling
This unit relies on convection cooling. Make sure that it is installed so that the ambient
temperature is within the specified temperature range, e.g. by avoiding obstruction of the
airflow around the unit.
CEN/TS 45545-2 mounting notes
Two Viper units can be mounted together and as a single interior non-listed group in the
sense of CEN/TS 45545-2 definitions. For multiple units the spacing requirements for
interior non-listed groups must be met.
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Getting Started
This product runs Westermo Operating System (WeOS) which provides several
management tools that can be used for configuration of the unit.
• IPConfig tool
This is a custom Westermo tool used for discovery of attached Westermo units.
• Web
Configuration of the unit using the web browser.
• CLI
Configuration of the unit via the Command Line Interface.
If the computer is located in the same subnet as the switch you can easily use a web
browser to configure the unit. Within the web you can configure most of the available
functions.
For advanced network settings and more diagnostic information, please use the CLI.
Detailed documentation is available in the chapter ”The Command Line Management
Tool” in the WeOS management guide.
Factory default IP address: 192.168.2.200
Netmask: 255.255.255.0
Gateway: Disabled
Note! If you are not sure about the subnet – consult your network administrator.
Configuration
Configure the unit via web browser
The unit can easily be configured via a web browser.
Open the link http://192.168.2.200 in your web browser, and you will be prompted with
a Login screen, where the default settings for Username and Password are:
Username: admin
Password: westermo
Once you have logged in, you can use the extensive integrated help function describing
all configuration options. Two common task when configuring a new switch is to assign
appropriate IP settings, and to change the password of the admin account.
The password can be up to 64 characters long, and should consist of printable ASCII
characters (ASCII 33-126); 'Space' is not a valid password character.
Note! Version of IP Config tool must be 10.4.0 or higher.
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Referring documents
Type Description Document number
Management Guide Westermo OS management guide
6101-3201
Factory default
It is possible to set the unit to factory default settings by using two standard Ethernet
M12 cables.
1. Power off the switch and disconnect all Ethernet cables.
2. Connect one Ethernet cable between Ethernet ports X1 and X6, and the other
between Ethernet ports X2 and X5. The ports need to be connected directly by an
Ethernet cable, i.e., not via a hub or switch. Use a straight cable – not a cross-over
cable – when connecting the ports.
3. Power on the unit.
4. Wait for the unit to start up. Control that the ON LED is flashing red.
The ON LED flashing indicates that the unit is now ready to be reset to factory
default.
You now have the choice to go ahead with the factory reset, or to skip factory reset and
boot as normal.
• Go ahead with factory reset:
Acknowledge that you wish to conduct the factory reset by unplugging the Ethernet
cables. The ON LED will stop flashing.
This initiates the factory reset process*, and after approximately 1 minute the unit
will restart with factory default settings. When the switch has booted up, the ON
LED will show a green light, and is now ready to use.
• Skip the factory reset:
To skip the factory reset process, just wait for approximately 30 seconds
(after the ON LED starts flashing RED) without unplugging the Ethernet cables.
The switch will conduct a normal boot with the existing settings.
* Note Do not power off the unit while the factory reset process is in progress.
6641-2242
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Dimensions
7,4
±0,5
36,7
±1
100
±1
56
±0,5
23
±1
6,7
±1
164
±1
142
±1
11
±1
M5
174
±1
22 ±1
6,5
-0
0,5
(4x)
0
1
35
75
110
111
16
0
1,5
24
23,3
48
48,8
73,5
72
14
54,1
±1
65,4
±1
Material / Remark
Designation / Dimension
Description
Quantity
Pos No
Scale
Designer
Sheet
Denomination
Approved
Date
Description
Designer
Rev
Date
Approved
PaPu
01
Created
130225
ToDu
Measurements are stated in millimeters.
20
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22
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Westermo • SE-640 40 Stora Sundby, Sweden
Tel +46 16 42 80 00 Fax +46 16 42 80 01
Sales Units
Westermo Data Communications
E-mail: info@westermo.com
www.westermo.com
China
sales.cn@westermo.com
www.cn.westermo.com
France
infos@westermo.fr
www.westermo.fr
Germany
info@westermo.de
www.westermo.de
For complete contact information, please visit our website at www.westermo.com/contact or scan the QR code
REV. C 6641-2242 2015-05 Westermo Teleindustri AB, Sweden – A Beijer Electronics Group Company
North America
info@westermo.us
www.westermo.us
Singapore
sales@westermo.com.sg
www.westermo.com
Sweden
info.sverige@westermo.se
www.westermo.se
United Kingdom
sales@westermo.co.uk
www.westermo.co.uk
Other Offices
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