MadgeTech RFCO2RHTemp2000A Product User Manual
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RFCO2RHTemp2000A
Wireless CO2, Humidity & Temperature Data Logger
Product User Guide
Product User Guide
To view the full MadgeTech product line,
visit our website at www.madgetech.com.
RFCO2RHTemp2000A Data Logger
Quick Start Steps ............................................ 1
Product Overview ........................................... 2
Additional Features & Operation ..................... 3
Mounting Instructions .................................... 4
Product Maintenance...................................... 5
Recalibration ................................................... 5
RMA Instructions.............................................. 5
General Specifications................................... 6-7
RFC1000 Transceiver
Product Overview ........................................... 9
Installation Guide ............................................ 9
Mounting Instruction .................................... 10
Channel Programming.................................. 11
Deployment & Activation............................... 12
General Specifications.................................... 12
Compliance Information................................. 13
Troubleshooting Tips ............. Back Cover
Table of Contents
1. Install the MadgeTech 4 Software and USB Drivers onto a Windows PC.
2. The RFC1000 interface device comes with a USB cable. Plug one end of the cable into
an available USB port on the PC and plug the opposite end of the cable into the
communication port on the RFC1000.
3. Push and hold the wireless button on the RFCO2RHTemp2000A for 5 seconds to
activate wireless communication. The display will confirm “Wireless: ON” and the
blue LED will blink every 15 seconds.
4. Launch the MadgeTech 4 Software. All active MadgeTech Data Loggers that are within
range will automatically appear in the connected devices window. Each data logger in
the list can be identified by serial number (printed on the exterior of the logger).
5. To claim a device, select the desired data logger in the list and click the Claim icon.
6. Select the start method, reading rate and any other parameters appropriate for the
desired data logging application. Once configured, deploy the data logger by clicking
the Start icon.
7. To download data, select the device in the list, click the Stop icon, and then click the
Download icon. A graph will automatically display the data.
Quick Start Steps
1. Install the MadgeTech 4 Software and USB Drivers onto a Windows PC.
2. Before plugging the data logger in the computer, make sure the wireless setting on
the device is set to “Wireless: OFF”. If wireless mode is on, press and hold the Wireless
button on the device for 5 seconds.
3. The RFCO2RHTemp2000A comes with a USB cable. Plug one end of the cable into an
available USB port on the PC and plug the opposite end of the cable into the
communication port on the RFCO2RHTemp2000A.
4. Launch the MadgeTech 4 Software. The RFCO2RHTemp2000A will appear in the
connected devices window indicating the device has been recognized.
5. Select the start method, reading rate and any other parameters appropriate for the
desired data logging application. Once configured, deploy the data logger by clicking
the Start icon.
6. To download data, select the device in the list, click the Stop icon, and then click the
Download icon. A graph will automatically display the data.
Product Operation (Plugged In)
Product Operation (Wireless)
Product User Guide
Product Overview
The RFCO2RHTemp2000A is a wireless data logger that measures and records carbon dioxide,
humidity, and temperature levels in a variety of applications. This data logger is ideal for use
in air quality studies including HVAC applications and much more.
The RFCO2RHTemp2000A data logger comes with a 16 ft cable connected to the CO2 sensor,
making it ideal for placement within enclosed environments such as an incubator to ensure
optimum levels. The logger features an LCD screen which provides instant access to current
readings, as well as minimum, maximum, and average statistics. The device also features
configurable alarms, battery life indicator, and the ability to reset statistics without impacting
the data collection. The logger features a convenient wall mount, while the CO2 sensor is
equipped with dual lock for easy and secure placement and effortless mobility.
Temperature recorded on the RFCO2RHTemp2000A can be expressed in °C, °F, °R, or K while
humidity can be shown in %RH, mg/ml, and Dew Point. Carbon dioxide can be expressed
as either ppm or as a percentage. All units can be viewed on both the LCD screen as well as
in the software.
The device can be used to determine ventilation efficiency in a variety of environments
including buildings, offices, hospitals, schools, and laboratories. By determining the levels
of carbon dioxide, improvements can be made to the ventilation systems and energy saving
opportunities become more easily identified.
Selection Buttons
The logger is designed with 3 direct selection buttons: Scroll, Units and Wireless.
• Scroll: Allows user to scroll through current readings, average stats and device status
information displayed on the LCD Screen.
• Units: Allows user to change displayed units of measurement: °C, °F, °R, K for the
temperature channel, %RH, mg/mL, Dew Point Units for the humidity channel and
ppm and % for the carbon dioxide channel.
• Wireless: Push and hold this button for 5 seconds to activate or deactivate wireless
communication.
• Manual Reset Option: Allows user to manually reset the statistics within the device to 0
without needing to use the MadgeTech software. Any data recorded up to that point is
recorded and saved. To apply the manual reset, press and hold the scroll key down for
three seconds.
LED Indicators
• Status: Green LED blinks every 5 seconds to indicate
unit is logging.
• Wireless: Blue LED blinks every 15 seconds to
indicate unit is operating in wireless mode.
• Alarm: Red LED blinks every 1 second to indicate
an alarm condition.
Connecting Information
Port Information
The RFCO2RHTemp2000A data logger has a screw
attachment for the CO2 sensor cable (Note: The sensor
and logger body must have matching serial numbers to operate).
2
Additional Features and Operation
Alarm Settings/Rules
In MadgeTech 4, alarms can be created in the software
or programmed directly on the data logger. Creating
alarm rules in the software allows the user to utilize
alarms during real time recording, and have the added
benefit of features such as e-mail and SMS notification.
An alarm that is programmed on the data logger will
only alert the user from the device itself, either by a
flashing LED, audible alarm, or local LCD notification.
Creating a Real Time Alarm Rule
1. Within the Device tab in MadgeTech 4, in the
Alarms group, click Manage Rules, then select New.
2. Enter a name in the Rule name box, and select whether notifications will occur when
All conditions are met or Any condition is met.
3. Select the desired conditions to have met before notifications occur, and select which
notifications will occur from the drop down menus.
4. If selecting to receive notifications by email or text message, click Email settings and
make sure the correct info has been entered. Email and text message notifications will
not be received if settings are incorrect.
5. Click OK. The OK button will be disabled if the Rule name box is empty.
Changing the Alarm Settings of a Device
1. In the Connected devices panel, select the RFCO2RHTemp2000A device.
2. Click the Properties button under the device tab at the top of the software, and select
the Alarm tab in the Properties window.
3. The High and Low settings indicate reading thresholds at which the alarm becomes active.
4. The Delay setting indicates how long to wait before the alarm becomes active after
passing an alarm threshold.
5. The Use cumulative alarm delay checkbox indicates whether the alarm delay should
reset when reading values fall back within the alarm threshold.
6. Once the alarm is configured appropriately, click Apply to save the settings.
**Please refer to the Help file in the MadgeTech software for more information regarding alarm settings**
3
Product User Guide
The base provided with the RFCO2RHTemp2000A can be used as a wall mount only.
• The base securely snaps to the backside of the logger for wall mounting
(as shown below).
• There are two holes in the base to allow for screws for mounting.
Mounting Instructions
4
Still need help?
For more troubleshooting tips and information, refer to the built in help section of the MadgeTech 4 software, visit
our Knowledge Base online at www.madgetech.com/kbase or contact us for customer support at 603-456-2011.
Materials: U9VL-J Battery
1. On the bottom of the enclosure, open the battery compartment by pulling in on the
cover tab.
2. Remove the battery by pulling it from the compartment.
3. Install the new battery, taking note of the polarity.
4. Push the cover closed until it clicks.
Recalibration
The RFCO2RHTemp2000A standard calibration is one point at 25 °C for the temperature
channel, two points at 25 %RH and 75 %RH for the humidity channel and the CO2 channel
is verified at fresh air level. (verification point of 70 ppm or 5 % of the reading.)
Recalibration is recommended annually for any MadgeTech data logger; a reminder is
automatically displayed in the software when the device is due.
Pricing:
Recalibration traceable to NIST
$300.00
RMA Instructions
To send a device back in to MadgeTech, follow the instructions below to create an RMA
(Return Merchandise Authorization) on the MadgeTech website:
1. Visit www.madgetech.com, under the Services tab select RMA Process.
2. When the web page opens, please sign in. If this is the first time, select Click here to
register an account and create one. Once signed in, click on the Make New RMA
button and fill in all the blank fields.
3. Complete the applicable fields on the form including customer Billing and Shipping
information, even if they are the same. Please see the field explanation below for a more
detailed description about questions asked in the Device Information section.
4. When all of the fields are complete, click Generate RMA.
5. Print out the confirmation page that follows containing the RMA number and
MadgeTech’s address for shipping. A Return Merchandise Authorization must be
accompanied by a copy of the RMA paperwork and shipping is prepaid by the
customer. The RMA number should be clearly marked on the outside of the package.
6. Please ship the package via UPS, FedEx, TNT, or DHL to the address listed on the
confirmation page. USPS will not ship MadgeTech data loggers.
7. A notification email will be automatically sent when MadgeTech has received the RMA.
Countries approved for use, purchase and distribution of the RFCO2RHTemp2000A:
Australia, Austria, Belgium, Bulgaria, Canada, Chile, China, Columbia, Croatia, Cyprus, Czech Republic, Denmark,
Ecuador, Estonia, Finland, France, Germany, Greece, Honduras, Hungary, Iceland, Ireland, Israel, Japan, Latvia,
Liechtenstein, Lithuania, Luxembourg, Malta, Mexico, New Zealand, Norway, Peru, Poland, Portugal, Romania,
Saudi Arabia, Singapore, Slovakia, Slovenia, South Africa, South Korea, Spain, Sweden, Switzerland, Thailand,
The Netherlands, Turkey, United Kingdom, United States, Venezuela, Vietnam
5
Product User Guide
Reading Rate
1 reading every second up to 1 reading every 24 hours
Memory
10,752 readings per channel
LED Functionality
• Green LED blinks every 5 seconds to indicate unit is logging
• Blue LED blinks every 15 seconds to indicate unit is in wireless mode
• Red LED blinks every 1 second to indicate alarm condition
Memory Wrap
Around
Yes
Start Modes
Immediate Start & Delay Start
Battery Type
Ultralife 9V lithium battery included; user replaceable
Battery Life Approximately 16 months typical at a 10 minute reading rate
Time Accuracy ±1 minute/month
Computer Interface
USB to mini USB, 250,000 baud for standalone operation or RFC1000
required for wireless operation
Operating System
Compatibility
XP SP3/Vista/Windows 7/Windows 8 (MadgeTech 4 only)
MadgeTech Software
Compatibility
• Standard Software version 4.2.1.1 or later
• Secure Software version 4.2.0.1 or later
Operating
Environment
• 0 °C to +55 °C (+32 °F to +131 °F)
• 0 %RH to 95 %RH non-condensing
• 0.002 PSIA to 100 PSIA
Dimensions
• Data logger: 3.0 in x 3.5 in x 0.95 in
(76.2 mm x 88.9 mm x 24.1 mm)
• Sensor: 1.98 in x 1.98 in x 1.15 in
(50.3 mm x 50.3 mm x 29.2 mm)
• Cable Length: 16 ft (192 in)
Weight
140 g (4.9 oz)
Enclosure Material
ABS Plastic
Alarm
User configurable audible, on-screen, email and text (SMS) alarms.
Alarm Delay: A cumulative alarm delay may be set in which the device
will activate the alarm (via LED) only when the device has recorded a
user specified time duration of data.
Audible Alarm
Functionality
1 Beep per second for reading alarm above/below threshold
Approvals
US (FCC), CA (IC), CE, South Korea (KCC), China (CMIIT), Japan (LCIE)
RFCO2RHTemp2000A General Specifications
6
This device complies with Part 15 of the 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.
To satisfy FCC RF Exposure requirements for mobile and base station transmission devices, a separation distance of 20 cm or
more should be maintained between the antenna of this device and persons during operation. To ensure compliance, operation
at closer than this distance is not recommended. The antenna(s) used for this transmitter must not be co-located or operating
in conjunction with any other antenna or transmitter.
0 ppm to 200,000 ppm
Measurement Resolution
10 ppm
Calibrated Accuracy
±70 ppm
Sensor Warm Up Time:
30 seconds
Carbon Dioxide (CO2)
Measurement Range
0 °C to +55 °C (+32 °F to 131 °F)
Measurement Resolution
0.08 °C
Calibrated Accuracy
±1 °C
Temperature
Measurement Range
0 %RH to 95 %RH
Measurement Resolution
0.08 %RH
Calibrated Accuracy
±3 %RH from 25 %RH to 75 %RH @ 25 °C, 7 %RH otherwise
Humidity
RF Frequency
2.45 GHz IEEE 802.15.4 ultra-low power wireless transceiver
with fully bi-directional communication
Band
ISM band 2.405-2.475 GHz Operation
(channels 11 through 25) @ 250 kbps
Maximum Output Power
+0 dBm typical
Receiver Sensitivity
(RFC1000)
-95 dBm typical
Transmission Distance
(to other RFC1000s)
• RFC1000
4,000 ft max. outdoors - line of sight unobstructed
1,000 ft max. indoors - typical urban environment
• RFC1000-CE
2,500 ft max. outdoors - line of sight unobstructed
700 ft max. indoors - typical urban environment
• RFC1000-IP69K
4,000 ft max. outdoors - line of sight unobstructed
1,000 ft max. indoors - typical urban environment
Transmission Distance
(to data loggers)
• RFC1000, RFC1000-CE & RFC1000-IP69K
2,000 ft max. outdoors - line of sight unobstructed
500 ft max. indoors - typical urban environment
Wireless
Battery Warning
WARNING: BATTERY MAY LEAK, FLAME OR EXPLODE IF DISASSEMBLED, SHORTED, CHARGED, CONNECTED
TOGETHER, MIXED WITH USED OR OTHER BATTERIES, AND/OR EXPOSED TO FIRE/HIGH TEMPERATURE.
DISCARD USED BATTERY PROMPTLY, KEEP OUT OF REACH OF CHILDREN.
Specifications subject to change.
See MadgeTech’s terms and conditions at www.madgetech.com
7
Product User Guide
RFC1000
Wireless Transceiver
8
Other models available:
RFC1000-CE - Approved for
European markets
RFC1000-IP69K - Splash Proof
for harsh environments
MadgeTech has designed the RFC1000, a high powered transceiver that has a substantially
long transmission range, providing enhanced performance in occluded environments
(ovens, refrigerators, etc.). The RFC1000 also features an external antenna, allowing more
flexibility with mounting positions in both orientation and proximity to metal walls. The
device may be used as a repeater, or directly plugged into the Windows PC.
Transmission Distance
The RFC1000 transmits to other RFC1000s up to 4000 feet maximum typical outdoors/
line of sight, 1000 feet maximum typical indoors/urban. The RFC1000 transmits to data
loggers up to 2000 feet maximum typical outdoors/line of sight, 500 feet maximum typical
indoors/urban. The RFC1000 can connect to a maximum of 64 data loggers. The RFC1000
transmits on a frequency of 2.405 GHz - 2.475 GHz.
Operating Environment
The RFC1000 is rated for use in an environment with temperatures from -20 °C to 85 °C
and a humidity range of 0 %RH to 95 %RH non-condensing. The RFC1000 is rated IP40
and is protected against solids that are greater than 1mm in size. This device is not water
resistant.
LEDs
The red LED indicates that the device has power. The green LED will blink when
communicating with other MadgeTech devices.
9
Installation Guide
1. Locate the Autorun.exe file on the MadgeTech 4 Software Flash Drive.
2. Select “MadgeTech Software” in the MadgeTech Installer Options window panel.
3. If the Windows PC doesn’t already have .NET 4.0 Framework, installation may be
required. Note: To see if the .NET 4.0 Framework is installed, go to the Windows Control
Panel and select Programs. “Microsoft .NET Framework 4.0” would be listed as a Windows
program.
Select “Install MadgeTech Software” if .NET framework is installed on the Windows PC,
or if installing on a Windows 8 machine.
Installing the MadgeTech 4 Software
Insert the MadgeTech 4 Software Flash Drive into an open USB
port on a Windows PC. If the autorun does not appear, locate the
drive on the computer and double click on Autorun.exe. Follow
the instructions provided in the Installation Wizard. Software
can also be downloaded from the MadgeTech website at the
following link: www.madgetech.com/software-download.
Product User Guide
Mounting Instructions
For best wireless performance, both the RFC1000 and the MadgeTech data loggers should
be mounted in the same orientation. This usually means that the external antenna should
be pointing straight up. The antenna can pivot to accommodate either a wall mount or a
desk mount.
10
The RFC1000 transmits data on the 2.4 GHz band and is programmed by default on
channel 11. Each MadgeTech Wireless Data Logger and RFC1000 has a set of dip switches
with which the channel may be programmed.
Different wireless channels may be used to create multiple networks in one area, or to avoid
wireless interference from other devices. Any MadgeTech data logger or RFC1000 that is on
the same network is required to use the same channel. If all of the devices are not on the
same channel, the devices will not communicate with one another.
The images below show the orientations available of the switches for each channel. Channel 26
(all switches in the up position) is not supported.
11
Follow the instructions below to configure the channel settings of the RFC1000
1. To program the channel on a RFC1000, first unplug the RFC1000.
2. Use a Phillips head screwdriver to unscrew the enclosure.
3. Find the dip switches located on the front of the PCB circuit board.
4. Change the dip switches to match the desired channel using the diagram above.
5. Screw the enclosure back together and reconnect the RFC1000.
Close-up
Product User Guide
RFCO2RHTemp2000A: To program the channel on the RFCO2RHTemp2000A data logger, start by
switching the wireless mode to OFF by holding down the Wireless button on the data logger
for 5 seconds.
Step 1: Use the USB Cable, plug the USB end of the cable into an available USB port on the PC.
Step 2: Plug the opposite end of the cable into the communication port on the RFCO2RHTemp2000A.
Step 3: Open the MadgeTech Software. Locate and select the RFCO2RHTemp2000A in the
Connected Devices panel.
Step 4: In the Device tab, click the Properties icon. The Properties screen will display information
about the device including Wireless setting.
Step 5: Under the Wireless tab, select a desired channel (11-25) that will match with the RFC1000.
Save all changes, disconnect the data logger, and return the device to wireless mode by
holding down the Wireless button for 5 seconds.
Deploying and Activating Devices
Step 1: Plug the RFC1000 into the USB port on the base station computer. (Additional RFC1000s can
be used as repeaters to transmit over greater distances)
Step 2: If using multiple RFC1000s plug each one into a wall outlet in the desired locations.
(If transmitting over a distance greater than 1000 feet indoors or 4000 feet outdoors or there are
walls/obstacles/corners that need to be maneuvered around, set up additional RFC1000s as needed.)
Step 3: Verify that the data loggers are in wireless transmission mode. (See Channel Programming steps
above)
Step 4: On a Windows PC, launch the Madgetech 4 software program. All active data loggers will
be listed in the software showing that the device(s) are recognized.
Step 5: To activate the data loggers, click on one to highlight, then click the Claim icon, and then
click the Start button. Do this for each logger in the list that needs to be activated.
RFC1000 General Specifications
12
Interface Type
USB (to PC) / Wireless (to Data Logger)
Operating Environment
-20 °C to +85 °C, 0 %RH to 95 %RH non-condensing
LED Indicators
Red & Green
Enclosure Materials
ABS Plastic (body), PVC Plastic (antenna)
Dimensions
Enclosure: 3.8 in x 1.6 in x 0.8 in / Antenna: 7.2 in
Approvals
FCC ID: OA3MRF24J40MC, IC#: 7693A-24J40MC
Transmission Distance
(To other RFC1000’s)
• RFC1000 & RFC1000-IP69K
4,000 ft max. outdoors - line of sight unobstructed
1,000 ft max. indoors - typical urban environment
• RFC1000-CE
2,500 ft max. outdoors - line of sight unobstructed
700 ft max. indoors - typical urban environment
Transmission Distance
(To data loggers)
• RFC1000, RFC1000-CE & RFC1000-IP69K
2,000 ft max. outdoors - line of sight unobstructed
500 ft max. indoors - typical urban environment
Maximum number of
connected data loggers
64
Frequency
2.405 GHz - 2.475 GHz
Ingress Protection
IP40
• “This device complies with Part 15 of the 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.”
• “To satisfy FCC RF Exposure requirements for mobile and base station transmission devices,
a separation distance of 20cm or more should be maintained between the antenna of
this device and persons during operation. To ensure compliance, operation at closer than
this distance is not recommended. The antenna(s) used for this transmitter must not be
co-located or operating in conjunction with any other antenna or transmitter.”
• “This device complies with Industry Canada license-exempt RSS standard(s). Operation is
subject to the following two conditions: (1) this device may not cause interference, and (2)
this device must accept any interference, including interference that may cause undesired
operation of the device.
Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils
radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes: (1)
l’appareil ne doit pas produire de brouillage, et (2) l’utilisateur de l’appareil doit accepter
tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre
le fonctionnement.”
• “Under Industry Canada regulations, this radio transmitter may only operate using an
antenna of a type and maximum (or lesser) gain approved for the transmitter by Industry
Canada. To reduce potential radio interference to other users, the antenna type and its gain
should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more
than that necessary for successful communication.
Conformément à la réglementation d’Industrie Canada, le présent émetteur radio peut
fonctionner avec une antenne d’un type et d’un gain maximal (ou inférieur) approuvé
pour l’émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage
radioélectrique à l’intention des autres utilisateurs, il faut choisir le type d’antenne et son gain
de sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas l’intensité
nécessaire à l’établissement d’une communication satisfaisante.”
Compliance Information
13
Why is the wireless data logger not appearing in the software?
If the RFCO2RHTemp2000A doesn’t appear in the Connected Devices panel, or an error message is
received while using the RFCO2RHTemp2000A, try the following:
• Check that the RFC1000 is properly connected. For more information, see Troubleshooting Interface
Cable problems (below).
• Ensure that the battery is not discharged. For best voltage accuracy, use a voltage meter connected to
the battery of the device. If possible, try switching the battery with a new 9V lithium.
• Ensure that no other MadgeTech software (such as MadgeTech 2, or MadgeNET) is running in the
background.
• Ensure that MadgeTech 4 is being used. MadgeTech 2 and MadgeNET are not the correct software for
connecting with the RFCO2RHTemp2000A.
• Ensure that the Connected Devices panel is large enough to display devices. This can be verified by
positioning the cursor on the edge of the Connected Devices panel until the resize cursor appears, then
dragging the edge of the panel to resize it. The screen layout may also be reset in the options menu by
selecting File, Options, and scrolling to the bottom.
Troubleshooting Interface Cable problems
Check that the software properly recognizes the connected RFC1000 wireless transceiver.
If the wireless data logger is not appearing in the Connected Devices list, it may be that the RFC1000 is
not properly connected.
1. In the software, click the File button, then click Options.
2. In the Options window, click Communications.
3. The Detected Interfaces box will list all of the available communication interfaces. If the RFC1000 is
listed here, then the software has correctly recognized and is ready to use it.
Check that Windows recognizes the connected RFC1000 wireless transceiver.
If the software does not recognize the RFC1000, there may be a problem with Windows or the USB drivers.
1. In Windows, click Start, right-click Computer and choose Properties or press Windows+Break as a
keyboard shortcut.
2. Click Device Manager in the left hand column.
3. Double click Universal Serial Bus Controllers.
4. Look for an entry for Data logger Interface.
5. If the entry is present, and there are no warning messages or icons, then windows has correctly
recognized the connected RFC1000.
6. If the entry is not present, or has an exclamation point icon next to it, the USB drivers may need to
be installed. These are available on the software flash drive included with the RFC1000, and on the
MadgeTech website.
Ensure that the USB end of the RFC1000 is securely connected to the computer.
1. Locate the USB-A plug of the RFC1000.
2. If the interface cable is connected to the PC, unplug it. Wait ten seconds.
3. Reconnect the cable to the PC.
4. Check to make sure that the red LED is lit, indicating a successful connection.
MadgeTech, Inc.
6 Warner Road l Warner, NH 03278
Phone 603.456.2011 l Fax 603.456.2012
www.madgetech.com l [email protected]
DOC 1291036-00 REV 3 2015.03.03