4-Pack WiFi Temperature Humidity Sensor: Wireless Temperature Humidity Monitor with App Alert, Free Data Storage Export, Smart Indoor Thermometer Hygrometer Compatible with Alexa Google Assistant

Lifesaver in our camper for our pets!
We bought these to put in our camper for the main purpose of keeping an eye on the temperature inside while we were gone during the day. We wanted to ensure our pets are safe and comfortable. It has worked flawlessly! They are small, but durable, with a design that provides quick placements.We used double sided strips to place them in the front, middle, and back of our camper. They worked so well, we took the fourth and placed it under the camper to keep a check on temperature to ensure it didn’t get cold enough to freeze our pipes during the winter.Connecting the to wifi was a breeze using the app and we have had no connectivity issues. But if the wifi does go out, they do not work. I’ve had to leave work a couple of times when I opened up the app to find them not working so I thought there was an issue (power out), when it turns out the wifi was down or router became unplugged. I wish there was a way for the app to say there was a wifi error.It’s nice the app shows you the temperature and humidity, as well as tracks it so you can see it over time.This was a blessing and well worth the price I paid for it. Will buy more of these ever go out.

Easy to use and accurate.
Simple little device that has allowed me to easily know the temperature at my lake home. It was easy to connect and gave me piece of mind to know if things were getting too cold.

They work but poor documentation.
We travel a lot, and wanted to watch the temperature in various parts of the house when away. These were relatively inexpensive, but lacked complete documentation. There were a several things I had to figure out trial and error. Things that if explained in the tiny 2 1/2 by 2 inch tiny print folded sheet (see pic) would have saved me lots of head scratching. For example… they come with degrees C default. That’s fine, most of the world uses that. However, changing from deg C to deg F was not straightforward. I clicked on the setting button and hit the deg F button. A tiny window opened up that only lasted about 2 seconds, that said change would take effect the next time the item “woke up”. OK, waited till next day, still did not show deg F. Putzed around and figured out that you had to push the little reset button under the battery compartment for that to take effect. No mention of this in the documentation. Pairing it with my WiFi was problematic, as it wouldn’t connect at first. I found that if I do it within 10 feet of the router, it did work. Anywhere else it fails. Once paired, I was able to put them (I bought a pack of 4) everywhere in the house and they responded. Again, no mention of having to pair nest to the router in the documentation. Then, they claim to work with Alexa, which we have. What a nightmare getting that to work. I never did, and gave up on that feature. As far as accuracy, when all four were placed side by side and let acclimate, the temperatures only varied 1 deg F between them, and the humidify readings were all within 5% humidity of each other. Again, better documentation, starting with print you don’t need a magnifying glass to read, would have made the whole ordeal much more painless.

Très contents de ces capteurs, qui me permettent de suivre les gelées nocturnes.

Works for me purposes. Cost per unit is very reasonable. Changing from C to F. Took a while to figure out. Make preferred choice. Choice only happens when there is a new communication between the app and devices.