Bests & Worsts Reviews from Amazon

I'll preface this by saying I bought this b/c my relatively new fridge seems to hold temperature poorly, so I've had a small mercury type fridge/freezer thermometer (hereafter referred to as "Mercury") since shortly after I bought it. The problem with these is that you have to open the door to read it, and I wanted something that I could have a Min/Max reading throughout the day to note down in case I need ammunition to use against the warranty company. Being able to monitor both fridge and freezer temps is a big plus! BOTTOM LINE: for those not wanting to read my drivel below -- The AcuRite 00986, after a week of use, works great for me... note that I had no battery issues like some have had. See next part... BATTERY TIPS: doing a Google search on battery characteristics, I found information [link removed by Amazon...] on Alkaline versus NiMH versus NiCd versus other battery chemistries. One of the very useful pieces of info was operating temperature range. Of note: Lithium operates down to -40C (-40F). Alkaline: 0C (32F). NiCd: -40C. NiMH: -20C (-4F). Well, I have a zillion NiMH rechargeable batteries for kids toys and since I really only care if the freezer goes above a few degrees F, then I figured I'd try NiMH for my sensors, before shelling out $$ on the Lithium AAs. Results: my freezer sensor has captured a temp as low as -13F, so I'd say the NiMH option was a smart move. Even if I have to change the batteries weekly, I swap them out with another set of NiMH and put them on the charger for a few hours. So, my advice to you is to get an inexpensive NiMH charger from somewhere ($10 maybe) and a package of at least 4 (~$7-10), but 8 would be nice, NiMH batteries. I'd recommend any low-discharge NiMH, such as Sanyo Enloops. If you really want to cheap out, get NiCd, but they don't have the capacity that the NiMH batteries do. I know the investment is a tad high upfront, but one set of Lithium AAs is $6, and it's single use. With the NiMH, you can use them hundreds of times, and with 2 each in your fridge/freezer sensors, the back-up ones could be in your kids RC car, flashlight, etc. You'll save $$$$$$ in the long run, if you switch your household to rechargeable in general for AAA/AA type applications. Ok, all the important stuff over, here is the boring, wordy review/information: I received the AcuRite version (I'm guessing the Chaney branding has gone extinct) of this product, opened it, installed batteries (more about the batteries later), and within seconds, the transmitters were sending temperature information. I let it sit on my desk for a while, and after the sensors stabilized, they were within 1 degree Fahrenheit of each other, and right at what my home thermostat was set to. Good so far! I then moved to the kitchen and put the sensors in the fridge/freezer, and mounted the display on the side of the fridge next to the freezer. It probably took between 10 and 15 minutes for the sensors to stabilize at the fridge/freezer temps. I bought another mechanical dial type thermometer (Taylor Classic #5924) from Amazon so I could compare the results with the AcuRite and Mercury. I started my "analysis of performance" by placing AcuRite #2 and Taylor in the freezer, and AcuRite #1 and the Mercury in the fridge. They all seemed to line up well, and I monitored things this way periodically over the course of the next few hours. Because my fridge is my biggest worry, I then moved Taylor to the fridge as well, and placed it somewhere else in the fridge away from AcuRite #1 on a different shelf. This way I could tell if temps across fridge were consistent. Again, everything seemed to read similar temperatures, so I'm confident the AcuRite system is A-OK for me.