- You will need to know what communication port number your PC is using. Go to "Device Manager" on your PC and select "COM Ports". There it will tell you which port the TMax is connected to. Follow this link if more assisstance is needed finding COM Port: https://www.lifewire.com/how-to-open-device-manager-2626075
- Click on the Setup button at the top of the screen.
- Click Rooms on the left side.
- Click on Timer on the left side of the screen
- The window that appears will have information for various brands of timer loaded into it by default. To change the timer type that you are using, click on the drop down under the timer column that corresponds to the communications port being used by that timer.
- Click Save
- Click the plus sign and fill in the boxes to look similar to what's in the above screenshot
- After you've set up the timer you can then proceed to select the timer in each room
- Select "Save" on each room
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