Used less than 2 months. I can test the accuracy indoors with other devices and it usually matches or is within 1 degree so no problem. External readings are slightly more variable, but usually within the allowable degree difference (i.e. 2 to 4 degrees). My sensor unit is about 50-60 feet from the receiver, so I can't comment on longer distances. Delivery was quick. Setup is easy. Based on initial observations, AcuRite 00418 appears to be inexpensive.
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