Product review (5 stars): Perfect little temp and humidity sensor that has great range and low battery consumption.
I purchased the AcuRite wireless 00611A3 to measure the temps and humidity of our attic here in Louisiana. We have a Ranch style home 2,000+ and a low pitched roof. The unit was up in 2 places for months while we monitored summer heat and humidity. It worked perfect, measuring over 160 (f) and reporting attic humidity. We moved the outdoor sensor behind a column to block the setting sun and under our eves not touching any part of the house 8" (inches) from any material and not in direct wind, rain or sun. With one new Li battery it has been going strong for over a year. We have used 4 other types of outdoor temp / humidity sensors to date and this one by far is the best.
I haven't checked the max range of the wireless but separated by two brick walls, wood wall and a really large fireplace we have it at 35' (ft) working fine. While in the attic we had at the longest 65' (ft). The signal indicator shows great signal. I'm sure it will work great at longer ranges but couldn't tell you right now.

<a data-hook="product-link-linked" class="a-link-normal" href="/AcuRite-00611A3-Wireless-Indoor-Outdoor-Thermometer-and-Humidity-Sensor/dp/B001B35APA/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">AcuRite 00611A3 Wireless Indoor/Outdoor Thermometer and Humidity Sensor</a>

Update: 3-22-2017 : The Remote fails to connect 100% of the time. From the looks of the battery compartment and knowing our humidity runs high here in Louisiana it's no wonder the contacts became corrupted. I have to say this unit has really done a great job and lasted longer than others we have owned in the same price range. We have the indoor united mounted on the wall and use it know for internal temps.
Well we be ordering another? Yes, what we paid was less than others that lasted only one summer. Still a 5 star product in my book. Just wish I had sealed everything but the sensor before placing it outside. I'll show how to seal it when we have our new one.