IP65 Indoor Outdoor Hygrometer Thermometer Wireless, 394ft Bluetooth Range, Refrigerator Thermometer, Dewpoint/VPD/Absolute Humidity Sensor, Free Data Storage Export, 2 Years Battery Life

I have tried a couple of brands of smart thermometers (Aqara and SensorPush) and I found these Switchbot sensors to be the best bang for the buck vs those other brands. The Aqara sensors kept randomly dropping their connection and the Aqara app was not very well polished. The SensorPush sensor and app work great, but they cost a lot more and do not sync with the Apple home app. The Switchbot sensors are easy to setup, and so far the connectivity has been 100% reliable for me (two months in) and the temperature readings seem accurate. They typically match almost perfectly with the temperature on my SensorPush sensor . The Switchbot app takes a little getting used to at first, but once you have it down it is a very data-rich and intuitive interface that I have really enjoyed using (especially over the clunky Aqara app). I use the Switchbot app to look at detailed temperature data, but I also have it synced up to Apple Home via the Switchbot Hub 2 so I can see the current temperature in the Home app. I do wish the Home app showed me the temperature history, but I don't mind using the Switchbot app for that instead. If you are a fan of the Apple Home app to control your smart home I think these temperature sensors are the best ones you can get! The temperature sensors and Hub 2 are the only Switchbot products I currently have, but based on my experience thus far I am sure they will not be the last Switchbot products that I purchase. I already plan to get more temperature sensors in the future. I highly recommend these!

Initially, I was hesitant to get these, as I really needed a bunch that would really work in different environments. After a year of use and adding about a dozen to my Hub 2s and working with Matter on Apple Home, I have to come back and just gush about how incredible these are! First: when paired with the SwitchBot App and cloud services, these things are incredibly. They store loads of data that can be viewed in the app on navigable graphs. Even better: you can just mass export the data to spreadsheets to view elsewhere. Second: the Bluetooth range is insanely good. I have some in my refrigerator and I can connect to them in my bedroom. Yes, it’s still Bluetooth so, the connection is hampered by the fridge door & bedroom door, but that it is even possible is a testament to how good these things are. I wouldn’t rely on the Bluetooth for my scenario, however, and I don’t have to: I can use the cloud services to more reliably connect. Third: Matter is excellent for these when paired with Hub 2 and my Apple Home Hub. The SwitchBot App treats both the temperature AND humidity readings of these as 1 device for Matter. Still, Apple has been able to treat the temperature and humidity sensors as distinct “devices” connected to the Hub 2…which is exactly the best case scenario (I save one of the 8 Matter Device slots that you are limited to per Hub 2, but still get 2 devices in Apple Home). Fourth: These really do work in harsher conditions. I have them in a bathroom that has regularly surpassed 70-percent relative humidity, in my freezer, and in my refrigerator.i haven’t had any issue. You can hang them via the lanyard, drop them on a shelf, stick them to a wall with the included 3M tape…I’ve eveb used command strips with them! They really are a value: especially when you get multiples. The sensors are just as good as the Meter Plus (which I also use), but without the screen, a longer Bluetooth range, smaller form factor, and higher whether resistance ratings.both are excellent for seeing trends and checking in on the climate at any point in time. The more you have, the better: I’ve been able to track micro changes in my apartment to fine-tune a dehumidifier. I went from a swampy house to one that is actually comfortable in part because of these. Highly recommend these! Hope this helps!

Good Bluetooth range and accurate temp and humidity readings. Very handy for monitoring outdoor, indoor, fridges, etc. The app works well and the sensors are tiny.

***1 month update: basement freezer sensor is no longer connected. I didn't get a notice that it disconnected, I just happened to notice that it was no longer reading. I even set it up to notify me for low battery sensors. I got no notifications at all but after replacing the batteries, it seems to be functioning correctly again. *** Item was packaged well and included simple instructions for setup. I noticed right off that the cords that the minihub uses are the old style USB connections and the package did not include a power adapter, which to me is absurd. If I paid for a working item but the item I received lacks the ability to even plug into a power grid, obviously I did not get a working item for the price I paid. I knocked a star for these reasons. Other than that, the item works well. It was just a bad first impression and I was lucky to have an extra adapter handy or I would have had to order and wait on that item as well before being able to use the remote thermometer I desperately needed to more accurately monitor our large tortoises' house in particularly bad weather. The items create a temp graph as they go, allowing me to see trends in the heating elements during the day and night. These are way more accurate than the brand I was using before. I threw the other two sensors into my deep freezers and now will hopefully get alarms before I get spoiled food in the event of a freezer failure. I like that I was able to integrate it easily into Google Home and can now ask the hub or my phone, "What temp is the basement freezer" or "What temp is the garage freezer" and it will instantly tell me. This was our first automated purchase and for the most part, we are very pleased with it.

Go not work for my purposes. I bought these sensors to put in my incubators to ensure the temp & humidity was accurate for hatching. I have tested these sensors several ways and cannot get stable and consistent readings from them. After days of getting fluctuating and varied readings from these sensors I tried place all three sensors in the same incubator as closely together as possible and out of the way of the fan. After an hour they were still giving off three quite varied readings - 100.4, 103.1, & 99.7. Very frustrating because they advertise that the sensors are highly accurate. The app works quite well and the alerts are easy to setup and use - however what good are they if I don't know if I can even trust the sensor's reading? UPDATE: I contacted customer service about this issue. They recommended calibrating the sensors by the ice bath method. I was told to place the sensors in a plastic bag and submerge them in a bowl of half crushed ice and half water for 30 minutes - they should then show 32 degrees. I started this process at 3:28pm. As you can see in the attached pictures, each of the three sensors took a full hour or more to register 32 degrees. At 30 minutes they were registering from 35.1 to 36.7 degrees. It took the additional 30+ minutes to get all the way to 32 degrees. Once the sensors were down below 33 degrees I got quite a few "Hub offline" errors and had to repeatedly try to force the app to refresh the data. It seems that maybe these sensors are just very very slow to acclimate and do not perform well in too low or too high of temps, which is disappointing in an "outdoor" sensors. Makes me question how long it would take for a small change in temperature to register. Overall, these sensors do not appear as though they will be good for use in the incubators as they do not seem to be as accurate in the 95-105 degree range and they are very slow to acclimate which would cause delays in reporting an issue in temp fluctuation in the incubator.

Wish I had found these sooner! I needed hygrometers for my fowl incubators. I’ve purchased many different brands from here and also one I borrowed from the Quality dept at Asurion. None are reliable after a few days; although it did take a week for the industrial one to go berserk. Then I finally found these by Switchbot. OMG! It’s like night and day. Finally, I have hygrometers that I can actually depend on even after a few days of running at higher heat, they don’t heat up themselves and give false, insanely high or ridiculously low readings. They give correct, stable temp readings every day. The only reason I discovered that the other brands grow incorrect over time is that I had multiple brands in my incubators. Some would go sky high and some would go insanely low all at the same time. Setting Sid by side, the temp can’t be 103 and 89 degrees and 40% and 70% humidity at the same place and time. Unfortunately, I discovered this a little late and lost an expensive batch of duck eggs due to depending on flaky hygrometers, turned up the heat and fried my duck eggs. Then I found Switchbot hygrometers and was able to get accurate readings through my next batch of duck eggs and had a 100% hatch rate. Also, they are small, short, and lie flat and low and actually get readings at egg level which is very important. They also don’t take up tons of room which is great for small incubators that don’t have much room for hygrometers. These are by far the BEST hygrometers out there that I have found. They are pricey; thus the reason I was so late in trying them, but I would have saved a ton of money on hygrometers and eggs if I’d just bought these to begin with. I am ecstatic that I found these hygrometers.

I hang an "Outdoor Meter" from the basement ceiling. Meter comes with a loop for easy hanging. I didn't get a hub, I just use Bluetooth to see what's happening. It might be interesting to hang another outside by the north side of the building, where the sun never shines. But there are enough personal weather stations in my neighborhood on the Internet, so generating my own data would be redundant. If I had to find a complaint, it would be that I have to make my Android tablet attempt to connect to the meter a few times before there's a successful connection, before the data starts rolling in. Tapping the tablet a few times before getting a connection isn't a big deal, except that it wastes a minute each time before you realize the request failed. The SwitchBot app is real nice. I like moving graphs, and it moves swiftly as a day's readings come in. The meter will save a huge amount of data if you don't connect for a long time. When you finally connect, the graph will slide along as the meter downloads its saved data up into the app. Practically, you can check out a lot of history whenever you finally get the chance to look it over. You can zoom in to an hour's graph, or more compressed to display a day's, week's, month's, year's. You can adjust ("calibrate") the SwitchBot app so its readings match the local thermometer/hygrometer. Good enough for government work. My dehumidifier can be adjusted in digital increments of 5% each. When I changed the adjustment from 45% to 40%, the humidity in the basement dropped from an almost constant 46% to an almost constant 43%. Just goes to show you. Well, it's only been a day, maybe it'll drop a couple more points over the next couple of days. A month or two later... Replaced antique cellphone with modern, compact, Google Pixel 8 cellphone with Android 14. When I go looking for SwitchBot data on Bluetooth, the connection hooks up fast, without me having to keep trying over and over. Surprisingly, the performance is much better than the tablet with Android 12, even though I'd expect the tablet to have a bigger antenna, etc. I don't think it's a matter of Android 14 being better than 12; I think simply the radio in the phone is better. But I don't know. Anyway, it proves that the SwitchBot can react quickly, given some good hardware talking to it. 4 months old... SwitchBot reports its battery is at 98%. My math is wanting, but... If 4 months used 2%, 100% will take 200 months, about 17 years. I'll let you know. On the very nice Android 12 tablet, 1 hour of data rolls in every 2 seconds. On the Pixel 8 phone with Android 14, the data rolls in so fast, it's hard to be accurate, but it looks like the data rolls in at 2 or 3 hours of data every second, about 4 or 5 times faster than the tablet. 11 months old... SwitchBot reports battery is at 89%. I got my SwitchBot for about $8. Ever since, the price has been $15. I'd have bought another two more, but I can't bring myself to do it. Wish they would run some intermittent $8 sales... I guess it's the Supply vs. Demand curve. Micro Economics 101. They discovered their product is more popular than they expected. Well, it works good.

SwitchBot’s hygrometer/thermometers are simply great. Very easy to use, frustration-free packaging, interface immediately into SwitchBot’s very well written app. I absolutely love being able to get current temp and humidity in the house, outside, and in my fridge (on my beer shelf, to be precise). They connected right up and haven’t disconnected from my network once in the 2.5 months they’ve been here. I have these connected through a SwitchBot “Hub Mini,” which was purchased in a bundled pack with three SwitchBot Blind Tilts (another great device, by the way). I believe you’ll need either the Hub Mini or SwitchBot’s “Hub 2.” The Hub Mini works just fine — there’s no need as far as these sensors are concerned to spring for the more expensive Hub 2. The Hub 2 is a more capable Matter-certified hub, but if buying one just for these sensors, the Hub Mini gets the job done. Purchased as a three-pack, these little sensors come in at just over 10 bucks per. If you’re a data junkie, that’s a great deal for what you’ll get out of these. REGARDING ACCURACY I’ve read reviews whenging about their accuracy. When these arrived, I connected them to my network and set them all together outside on a table in the shade. After a couple hours, they all reported the same temps and humidity — within a couple tenths, anyway. Certainly within an acceptable range for me. I mean, look, I’m not doing rocket surgery, I just want to know the temp and RH. Concise calibration instructions are included in the app and they’re easy to execute. There’s no reason anyone should be complaining about accuracy. I’m posting a second video demonstrating calibration of the sensors if you’re interested. Order you some and get your monitoring on.