The remote sensor stopped working after about 6 months of use. I noticed for a couple of days the temperature readout had frozen at 4 degrees C. Brought it inside, removed the batteries overnight and then went through the instructions for replacing the batteries (yes, brand new Duracell batteries, sensor first, away from any other electronics, plus tried in multiple locations). The outside sensor was installed under cover, so it was not exposed to direct sunlight or rain. I received this as a gift, it was purchased at Costco here in London, Ontario around September/October. Very disappointed, the remote sensor has always been the weak point for Acurite products I've owned.