Support Articles — rfc1000

Change Wireless Channel On RFC1000, RFOT (original model), Therm-A-lert data loggers

Posted on

There are dip switches on the RFC1000s, the original larger model RFOTs, and all models of Therm-A-lerts. There are four switches together labeled 1, 2, 3, and 4. These dip switches are what you use to configure the wireless channel that the wireless system operates on. 

For most customers the default (Channel 25) setting—1,2,3 UP and 4 DOWN—should be suitable. However, if you are having signal strength issues or wireless interference, in otherwise good locations you may want to try switching all of your loggers and RFC1000s to a different channel by changing the dip switch configuration. If some of the loggers or RFC1000s are configured with different combinations, they will NOT communicate with each other. This means if you wanted to set up two discrete networks of loggers that were separate from each other, you could simply set up some of them on one channel, and the rest on another.

These switches should not be confused by the wireless On/Off switch, which is a small black switch that can be set to (1) for Wireless mode or (0) for Stand-Alone mode.


When changing the channels, wireless should be toggled off, and toggled back on again after changing the channels. The channel change will not work properly unless this reset is performed.

The “PreInstaller.exe” USB Driver Installer Won’t Run – How to install drivers manually

Posted on

The following applies to the IFC203, IFC300, IFC400, RFC1000, and original “converter box” style of IFC200. It does not apply to current the “flash drive” style of IFC200.

The standard method of installing the USB drivers is to run the “PreInstaller.exe” USB driver installation utility before plugging in the IFC.  Locate the PreInstaller on the MadgeTech installation flash drive, or download the USB driver zip from the software download page.  If the PreInstaller will not run, or crashes without installing, install the USB drivers manually.

Plug in the IFC, and locate it in Device Manager.  To open Device Manager, go to the Start Menu, right click on Computer (or This PC in Windows 10), and select Manage. In the left column of the Computer Management window, select Device Manager.

After selecting Device Manager in the left column, a list of devices will appear in the right column. If the USB drivers for the data logger interface have not been installed properly, it will typically appear as an item in Other Devices with an exclamation point or a question mark. This is usually called Unknown Device, USB Docking Station, or something similar.  Right click on this item and click properties. In the following window, click the driver tab and select Update Driver. The next steps will vary based on the version of windows.

Windows 7 and 10: 
Click Browse my computer for driver software. Click Let me pick from a list of device drivers on my computer. Click the Have Disk button (if this is not an option, click All Devices, and then next. This should advance to the screen with the Have Disk option). Click the Browse button to open a Locate File window.  Browse to the MadgeTech installation media (software flash drive or software CD) and open the USB folder.  Alternatively, if installing drivers downloaded from the software download page, navigate to the folder extracted from the USB Drivers zip file.  Select the mtiUSBXp.inf file and click Open and then click OK.  Select data logger Interface under Model, and then Next. The data logger Interface driver to your IFC. Click Finish.

Windows XP
The Hardware Update Wizard will prompt to connect to Windows Update to search for the software. Select No, not this time and click Next. Select Install from a list or specific location [Advanced] and click Next. Select Don’t searchI will choose the driver to install and Next. On the next screen pick Have Disk (if this is not an option, click All Devices, and then next. This should advance to the screen with the Have Disk option) button to open a Locate File window.  Browse to the MadgeTech installation media (software flash drive or software CD) and open the USB folder.  Alternatively, if installing drivers downloaded from the software download page, navigate to the folder extracted from the USB Drivers zip file.  Select the mtiUSBXp.inffile and click Open and then click OK.  Select data logger Interface under Model, and then Next. The data logger Interface driver to your IFC. Click Finish.

At this point the driver should be correctly installed.  A software or computer restart may also be required before the data logger will be recognized.