Honeywell Thor VX8 Reference Manual page 145

You are prompted for the password that was assigned when the certificate was exported.
It is not necessary to select either of the checkboxes displayed above.
For these devices, there is a third checkbox: Include all extended properties. This checkbox should remain
checked.
Enter the password and tap Next.
On the next screen, allow Windows to automatically select the certificate store, then click Next and Finish. An import
successful message is displayed.
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