Hello, I'm not at all satisfied with my purchase of the 2 sensors T ° I bought from you !!! The outer carton Amazon arrived in excellent condition !! By cons inside the two boxes detectors were open, one was outside his protective bubble the other out and hardly recovered and was missing a battery! I do not pay to have visited packets and not the Post since embalage Ext. was impeccable !!! Cordially Dominique Lécolier