Product review (1 stars): Good paper weight
Not waterproof or water resistant. Hung outside under an awning. Storm had high winds and blowing rain, and still no more than a couple drops could have come in direct contact of the exterior unit, but it failed. Inane design of exterior unit is seriously flawed. Louvered sensor is exposed, and unless the unit is placed in a totally leak proof environment like in the middle of a covered patio, expect it to fail. Acurite is poorly designed.