Instructions:Remove the product from packing box and placed in 1~2 hours it will display correct datas; but sometimes during transportation shock may leads to few products in wrong datas,There are two holes in the product back for adjust. to adjust the temperature and hygrometer you compare the numbers with a correctly functioning reference instrument. 
<br />It has folding bracket,the item can be put on table or hanging on the wall,and bracket has been patented!
<br />Products meet export requirements,Environmental materials,please rest assured to buy.