RFOT
Wireless Meat Temperature Data Logger
PRODUCT
USER GUIDE
TABLE OF CONTENTS
2 Quick Start Steps
2 Product Overview
3 Software Installation
4 Activating & Deploying the Data Logger
5 Channel Programming
6 Product Maintenance
7 Troubleshooting
8 Compliance Information
9 Need Help?
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RFOT
QUICK START STEPS
Product Operation
(Wireless)
1 Install the MadgeTech 4 Software and USB Drivers onto a Windows PC.
2 Connect the RFC1000 wireless transceiver (sold separately) to the Windows PC with the provided USB cable.
3 The RFOT is shipped with wireless transmission in an active, low power state. During normal use, inserting a USB
(micro B type) cable into the RFOT will pass control to the MT4 software and disable the wireless transmission. When
the USB cable is unplugged, wireless transmission resumes with settings that were chosen in MT4.
4 Launch the MadgeTech 4 Software. All active MadgeTech data loggers that are within range will automatically appear
in the Connected Devices window.
5 Select the data logger within the Connected Devices window 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 Start.
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.
Product Overview
The MadgeTech RFOT is a two-way wireless meat cooking
and cooling data logger. The RFOT’s rugged design,
equipped with a flexible piercing probe allows it to
be used in harsh environments. The RFOT is perfectly
suited for use in smokehouses, ovens and other cooking
processes up to 212 °F (100 °C) as well as refrigerators and
freezers down to -4 °F
(-20 °C). The RFOT is completely splash-proof, and can
withstand wash down cycles. The RFOT records and
wirelessly transmits internal product temperature readings
back to a central PC for instant real-time monitoring, even
when a smokehouse or freezer door is closed. The RFOT
allows the user to also set-up real-time wireless alarming
within the software, so that the user is notified by email or
text if an alarm condition has been met or exceeded. The
RFOT assists in complying with HACCP requirements as
well as USDA regulations.
Options and Accessories
RFOT-FR, RFOT-4, RFOT-4TD,
RFOT-7 and RFOT-12
TLH-5903
PN: 901748-00
3.6V Lithium Battery
RFOT O-Ring Kit
PN: 902149-00
Includes 1-Square and
1-Round O-Ring
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Product User Guide | 2
RFOT
SOFTWARE INSTALLATION
MadgeTech 4 Software
The MadgeTech 4 Software makes the process of downloading and reviewing data quick and easy,
and is free to download from the MadgeTech website.
MadgeTech 4 Software
1. Download the MadgeTech 4 Software on a Windows PC by going to
2. Locate and unzip the downloaded file (typically you can do this by right clicking on the file and selecting Extract).
3. Open the MTInstaller.exe file.
4. You will be prompted to select a language, then follow the instructions provided in the MadgeTech 4 Setup Wizard to
finish the MadgeTech 4 Software installation.
Installing the USB Interface Driver
USB Interface Drivers can easily be installed on a Windows PC, if they are not already
available and running.
1. Download the USB Interface Driver on a Windows PC by going to
2. Locate and unzip the downloaded file (typically you can do this by right clicking
on the file and selecting Extract).
3. Open the PreInstaller.exe file.
4. Select Install on the dialog box.
MadgeTech Cloud Services
MadgeTech Cloud Services allows users to remotely monitor
and manage groups of data loggers throughout a large facility or
multiple locations, from any internet enabled device. Transmit
real-time data to the MadgeTech Cloud Services platform via the MadgeTech Data
Logger Software running on a central PC or transmit directly to the MadgeTech Cloud
without a PC using the MadgeTech RFC1000 Cloud Relay (sold separately). Sign up for
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RFOT
ACTIVATING & DEPLOYING THE DATA LOGGER
Activating & Deploying the Data Logger
1. Connect the RFC1000 wireless transceiver (sold separately)
to the Windows PC with the provided USB cable.
2. Additional RFC1000’s can be used as repeaters to
transmit over greater distances. If transmitting over
a distance greater than 500 feet indoors, 2,000 feet
outdoors or there are walls, obstacles or corners that
need to be maneuvered around, set up additional
RFC1000’s as needed. Plug each one into an electrical
outlet in the desired locations.
3. Launch the MadgeTech 4 Software.
4. The RFOT is shipped with wireless transmission in an
active, low power state. Inserting a USB (micro B type)
cable into the RFOT enables direct USB communication
and disables wireless transmission. Direct USB
communication allows for changing the wireless
channel in the device’s Properties, if necessary.
Mounting Instructions
For best performance, the RFOT
should always be hung by the
hook in an upright position. This
will allow for the best path for
the wireless signal.
Transmission Distance
Typical transmission distance
from an RFC1000 to an RFOT:
• Unobstructed line of sight (outdoors): 2,000 feet max
• Typical urban environment (indoors): 500 feet max
5. When the USB cable is unplugged, wireless
transmission is enabled.
6. All active data loggers will be listed in the Device tab
within the Connected Devices panel.
7. To claim a data logger, select the desired data logger in
the list and click the Claim icon to pair the logger to the
RFC1000 connected to the PC.
8. Choose the start method, either Real Time Start
to view data as it is collected, or Custom Start for
standalone logging to memory. By default, a report is
generated automatically when starting a logger using
Real Time Start. With Custom Start, data is recorded to
memory and can be viewed by selecting Stop to end
the cycle, and Download to retrieve the data from the
logger’s internal memory.
Obstacles
Obstacles will decrease the line-of-sight from an RFC1000
to another RFC1000 as well as from an RFC1000 to an
RFOT. Obstacles that interfere with or decrease the
wireless signal could include but are not limited to
smokehouse doors, freezer/refrigerator doors, building
structures such as walls and metal beams and internal
traffic such as forklifts and metal racks or carts. Additional
RFC1000’s can be placed near obstacles to lengthen and
strengthen the wireless signal.
Deflection
When a wireless signal “hits” an object such as a metal
wall, the wireless signal will not just stop but rather it
could turn a corner, bend or slow down. When installing
the RFC1000’s obstacles and possible deflection should
also be considered.
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Product User Guide | 4
RFOT
CHANNEL PROGRAMMING
Channel Programming
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 wireless transceiver 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.
MadgeTech wireless data loggers and RFC1000 wireless transceivers are programmed by default on channel 25.
Changing the channel settings of the RFOT
1. Using a USB cable, plug the RFOT into the PC.
2. Open the MadgeTech 4 Software. Locate and select the
data logger in the Connected Devices panel.
3. In the Device tab, click the Properties icon. Or, right
click on the device in the connected devices window
and select properties.
4. Under the Wireless tab, select a desired channel
(11 - 25) that will match with the RFC1000.
5. Click OK to save changes.
Be sure that the channel chosen matches the channel
settings of the RFC1000 wireless transceiver which this
device will communicate through.
CHANNEL NOTE: MadgeTech wireless data loggers and
wireless transceivers purchased prior to April 15, 2016
are programmed by default to channel 11. Please refer to
the Product User Guide provided with these devices for
instructions to change the channel selection if needed.
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Product User Guide | 5
RFOT
PRODUCT MAINTENANCE
Product Maintenance
Battery Replacement
Materials: TLH-5903 Battery
1. Unscrew the end cap and gently separating the end from the body of the data logger.
2. Remove the battery retention clip by sliding a small screwdriver blade or paper clip between
the clip and battery holder and prying away from the holder.
3. Grasp the black base of the unit with cord hanging downward and both edges of the circuit
board, all with one hand. Pull the old battery out with the other hand.
4. Install a new battery, observing the polarity markings on the circuit board and battery holder.
Position the battery retention clip over the new battery and install by pressing downward until a
click is heard from each side.
5. Install the new battery as shown by the diagram on the bottom of the battery holder.
6. Screw the body of the logger back together making sure the O-Rings are not visible.
Battery Replacement
Materials: TLH-5903 Battery
1. Unscrew the end cap from the RFOT to expose the
O-Ring.
2. Use a small pointed tool (knife or pick) to pry the old
O-Ring out of its groove.
3. Make sure that the O-Ring groove is free of any dirt or
debris.
O-Rings
O-Ring maintenance is a key factor when properly caring
for the RFOT. The O-Rings ensure a tight seal and prevent
liquid from entering the inside of the device. Please refer
to the application note O-Rings 101: Protecting Your
Data, found at , for information on how
to prevent O-Ring failure.
O-Rings
3.6V Lithium
Battery
4. Partially screw the mating parts back together leaving
the O-Ring groove exposed.
5. Apply a thin coat of silicone based lubricant to the
O-Ring.
6. Stretch the O-Ring over the cap and into its groove.
WARNING: Avoid stretching the O-Ring over the threads.
Sharp threads can cut the new O-Ring.
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RFOT
TROUBLESHOOTING
Why is the wireless data logger not appearing in the software?
If the RFOT doesn’t appear in the Connected Devices panel, or an error message is received while using the RFOT,
try the following:
• Check that the RFC1000 is properly connected. For more information, see Troubleshooting wireless transceiver
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 the MadgeTech 4 Software is being used, and that no other MadgeTech Software (such as MadgeTech 2,
or MadgeNET) is open and running in the background. MadgeTech 2 and MadgeNET are not the compatible with the
RFTemp2000A.
• 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.
• Ensure that the data logger and RFC1000 are on the same wireless channel. If the devices are not on the same channel,
the devices will not communicate with one another. Please refer to the Channel Programming section for information
on changing the device channel.
Troubleshooting wireless transceiver 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 MadgeTech 4 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.
2. Select Device Manager in the left hand column.
3. Double-click on 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. USB drivers can be downloaded from the MadgeTech website.
Ensure that the USB end of the RFC1000 is securely connected to the computer.
1. If the cable is connected to the PC, unplug it and wait ten seconds.
2. Reconnect the cable to the PC.
3. Check to make sure that the red LED is lit, indicating a successful connection.
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Product User Guide | 7
RFOT
COMPLIANCE INFORMATION
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 colocated 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.
Countries approved for use, purchase and distribution:
Australia, Austria, Belgium, Bulgaria, Canada, Chile, China, Colombia, Croatia, Cyprus, Czech Republic, Denmark,
Ecuador, Estonia, Finland, France, Germany, Greece, Honduras, Hungary, Iceland, Ireland, Israel, Japan, Latvia,
Liechtenstein, Lithuania, Luxembourg, Malaysia, 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
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