We have two indoor/outdoor thermometers that we use in the trailer. Both came from Walmart. One is used for the frig. The other I have the sensor mounted under the hitch on the brake wire junction box. It is in the shade 100% of the time, but does pick up some reflection of ground heat in the afternoon if the Monty is parked pointed to the west, otherwise it works perfectly. I do not remove it for travel.
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