My older travel trailer’s refrigerator does not have a built-in temperature gauge on the outside of it and I wanted to be able to keep track of that without having to open the door all the time. I found a wireless remote thermometer for about $10 at Walmart and attached the sensor inside the refrigerator in a spot where it would not get wet from condensation, then secured the display unit on a wall where I can see it at a glance. It works just fine.
David Dorsey, Newark, Del.
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