AcuRite 00782A2 Wireless Indoor/Outdoor Thermometer, Temperature,White, 0.4

Very reliable and accurate, easy to read and it lets you know when to change the batteries by blinking. It’s also very small and easy to hide.

Very good product and work very well and is easy to read and setup.

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.

this item is very helpful to me to know what the temperature is in my well pump house to prevent the water from freezing on the cold, cold winter nights when the temp drops down below 30 degrees so I can turn on my heat bulb inside the pump house

Very nice. Pretty accurate. Better than your phone. You won't believe how far off your phone is. I would buy again.

Works great; easy to use. We bought it to use in our RV, and I set the sensor up under the wheel well when camped to get the outside temperature. (Keeps it shaded under there. ) Love to be able to get up and see what the outside temperature is and dress accordingly.

I have one of these that is 7 years old and still working fine which is not true of most things you buy for $15 these days. I just put this and a Govee sensor in my wedgewood stove which has pilot light so it's always warm, and they both agree within a tenth of a degree that it is 131.7 degrees in there, so seemingly it is functional and accurate at high temperatures as well. We usually just leave it outside so that we can see what the weather is like in terms of what clothes to put on. Batteries last forever, I might change them out every . . . 6 months? But it might even be longer than that. And these are rechargeables.

I just received this today with the goal of using it with my RV, and I'm not impressed. Sitting next to each other on the table there is a 2-3 degree (F) difference between the indoor and outdoor temperature even after sitting for a few minutes to equalize after putting batteries in. For this, I've removed 1 star. I've removed 4 stars, because the "outdoor" sensor is in no way ready to be outdoors. It is cheap, low quality plastic with absolutely no apparent attempt to weather seal it. So if you have a perfectly dry place to put it outside it will probably work. Most places I can think of that would be guaranteed to stay dry would likely impact the readings though. You can clearly see in to the circuit board through the hanging hole. Even if the circuit board was coated to make it waterproof, the battery compartment is not. Lastly, if you plan to use this beyond a few feet, good luck. I have a plastic dry-box on the tongue of my 18' trailer where I placed the "outdoor" sensor. It will stay dry, but not accurate. It does seem to reach to inside the trailer. My 18' trailer is backed up to my small garage. If I place the receiver inside the garage, no more signal. So it will reach about 8', but it won't reach 50'. It was cheap, so I won't send it back because that is more work than it is worth. I just wanted to generally know the temperature inside and outside, so I guess it gets me somewhat close.