Samsung MIM-H03 Create new device type to show correct data?

Welcome to the SmartThings Community, @Derf!
Have you tried to install the device from the SmartThings mobile app?
I mean going to Add (+) > Device > Search for device (look at the picture below) and then follow the instructions.

Once you add it, you’ll see which Device Type it uses and it should refresh accordingly.
If you want to send those values to a third-party, you can create a SmartApp with capabilities subscriptions that will help you receive the update events. Then, you’d decide how to send those values.
For more info:

Let me know if you have any questions.