You can get these at the Dollar Store. They work very well to protect the unit on your remote thermometer sensor from the rain which will ruin your investment in a hurry.
I know it’s not some high tech revelation but sometimes there are simple solutions that we can pass on. I hear many stories of semi-expensive remote thermometers getting destroyed by rain.
Being transparent they allow you to see the temps without having to take the unit out if the container.
The cord on the probe goes right out the corner and the container can still be locked down to protect from the elements.
This one was $2 and I got it at Ocean State Job Lot in Peabody.