TucsonJim wrote:
I use an indoor/ourdoor wireless thermometer. I put the outdoor unit in the refrigerator, and the inside unit on the counter. With just a glance, I can check the refrigerator temperature without having to open it up. I can also hit the display and see the highest and lowest temperature recorded since the last time I reset it.
With the unit that I'm attaching in this link, you can put another monitor outside the coach to see and record the temperature outside.
Wireless Indoor/Outdoor Thermometer
I have a similar unit as this that I will on occasion put in the fridge just to check it. You can find similar at lowes or home depot