
When it arrived I gave it to my husband to set up and run. He said it was easy enough to install, ours came with all the batteries, I see other reviewers only got 4 of the 6 needed which is not good factory quality control. He had no problem understanding instructions and liked that he could be calibrated. We have another brand of something very similar and we both noticed THAT Extech RH200W running in circles around the other on how much closer it is to actual temperature and humidity. Here in the desert we like to know the temperature BEFORE we open the door. It seems correct and my husband really enjoys the large readings that he can see from across the room. As for mounting the sensor which is outside he just planted ours in the shady part of the pole he wants to hang it on the wall and once he digs something to screw to the wall it would be nice if you have this in included the article so you have a complete device ready to use and no hardware digging or buying required. But overall he is very satisfied with the product.

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