AcuRiteAcuRite 02097M Wireless Indoor/Outdoor Thermometer with Humidity Sensor , Black

We live in a house that sets up on short blocks and has a crawl space about two feet high. The well pipe pops up in the crawl space about a foot from the insulated wall of the crawl space skirt. We keep an eye on the temperature down there using this remote unit because the temps frequently drop below zero in the winter and we need to check the heat tape on the pipe if the temps in the crawl space go below freezing. The remote transmitter is about half the size of a computer mouse and can be set on a flat surface or hung on a wall or from a pipe using a piece of stiff wire. The batteries lasted over two years and the unit worked for three. I suspect it would still be working if not for a nearby lightening strike this summer that toasted a number of electronic devices we had operating near the house. When we had to replace the set-up, we opted for the exact same unit because of it's simplicity and reliability.

Our stable uses heated horse waterers which have a double bowl on top of a metal base which contains a heater. The heaters are difficult to adjust to any particular temperature and it was crucial that I could determine how close to freezing the temperature in the closed base unit was at various air temperature in the barn. Freezeup inside the heater base could break the essential water lines and valves and become a huge problem. I decided to experiment with the Acurite indoor/outdoor thermometers . I set the "outdoor" wireless transmitting unit inside the base box of the waterer to monitor the heater performance and hung the "indoor" thermometer/receiving unit on the wall a few feet outside the waterer. I have double-checked with mercury thermometers and found that Acurite units gave me accurate readings inside the waterer base. All last winter when air temps dropped below zero I could quickly determine the temperature within the base unit and adjust the heaters as needed. It was an unusual use but was fabulous and prevented many problems. Despite what it says in the instructions, the "inside" thermometer/receiver works great well below 32 degrees. I see no reason they wouldn't do great in the simpler situation of giving you readings in your home and at some target point outside. I did have a problem of resetting them when I changed batteries after a year. One unit started interfering with the other so I threw it out and replaced it. They are inexpensive enough that replacement was not a concern. They are out there tonight monitoring the waterers in our barn and eliminating many worries.. Such a cheap way to prevent problems and get a good night's sleep.

Giving this 4 stars because I had one on my camper for a couple of years. I had the outside unit zip tied under the frame, and honestly I'm surprised it lasted as long as it did especially when towing through rain and dirty roads it would get covered in water & dirt and then still work when we got to the campsite, so that speaks to its resilience. Well the outdoor unit did finally die, it was all corroded when I opened it up. I ordered the same unit as a replacement and the replacement was non-functional from the start. Would not connect to the outdoor unit, indoor unit always said it was at low battery (despite trying several fresh batteries), and the LCD display had some elements that were not illuminating. I sent that one back for a full refund and purchased a more comprehensive unit that includes humidity. So, when it works, it works great, but if you get a dud from the start just send it back.

Works great, seems to be a acurite temperture monitor for indoor and outdoor temps. A little smaller than expected, but I like it.

This is a nice little unit for showing inside and outside temperature. I have bought many AcuRite thermometer products over the years and I like their quality. The only issue with this thermometer is the accuracy. I have the inside unit and the outside unit next to each other and also next to my AcuRite weather station in my kitchen. I wanted this remote thermometer for my office. The three unit, within inched of each other showed three different temperatures. The 782 local and its remote temperature were off by one degree, the remote was a degree lower than what the internal unit was showing. The internal temperature of the weather station was two degrees higher than the 782 remote unit sitting next to it. This is not a big deal for figuring out whether I need to wear a jacket or not, but noteworthy that three sensors from the same company are calibrated differently.

I was a little hesitant given the reviews that were showing how off it was when setting the outside part next to the inside part. But mines only 1 degree off which is acceptable. Working pretty good!

Accurite sensors have always had a good solid wireless connection between the sensor and display, and this is no exception in that regard. However, I am not impressed with the accuracy of the device, nor of the customer service.When I first received the unit, I put fresh batteries in both the sensor and display, and set them side-by-side on the dining table. The indoor and outdoor temperatures agreed pretty closely, but the indoor and outdoor humidity were wildly divergent.The outdoor humidity reading was 39% and the indoor reading was 49%, even though they were sitting but 2 inches from each other. I had two other humidity sensors (from a different manufacturer) sitting on the same table, and they both read 48%. Apparently, the indoor sensor is more-or-less correct, but the outdoor sensor is way out of spec - 28% by my calculations. I left them thusly overnight and the readings did not improve.I submitted a support request with Accurite, and received a form response, telling me to do all of the things I had already done (and mentioned that I had done in my support request).I guess this is a pretty good unit for the price, but don't plan to use it for anything more than looking at trends.