MonoPrice Motion - Temperature Question

I have 2 of the Monoprice zwave motion sensors in my garage. The they are working fine. I have the “additional temperature device” plugin getting the each of the temperatures. They are both in Celcius.

Here is what i would like to do.

  1. If possible, configure the motion sensors for Fahrenheit. I have had no luck adding a parameter to accomplish this.

  2. If not possible, Create a device that averages the 2 temperatures from the devices and converts the average to Fahrenheit.

Any help appreciated.