Systech Corporation CAREU U1 Lite User Manual page 11

11. In [HyperTerminal] window, type in the command "AT$VERSION?" and press
the Enter key. The hardware and firmware version will show. As long as your
[HyperTerminal] window appears as the screenshot below, a connection
between the device and your system has already been built up and working. It
is time to send all configuration commands.
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