Indoor Outside Thermometer Wi-fi, 4.5 Inch Show Digital Hygrometer Thermometer Temperature Humidity Monitor with 330ft Vary Sensor and Adjustable Backlight

Works well, and rtl_433 compatible.
This is an inexpensive weather station, so I set my expectations accordingly, but after having a chance to use it, it’s a pretty decent value for the price. Everything seems well built and feels solid. The display is clear, intuitive, and it’s easy to read all four temperatures from a distance. It also has some nice features, like the ability to set alarms based on temperature or humidity. It can be powered by three AAA batteries, or by an included USB cable. One small issue here: there’s no USB power supply included. Not a big deal if you’re like me and have a collected a bunch from the days when every new phone came with one, but worth considering if you’re planning on powering it that way.Somewhat more annoying is the screen space taken up by the “comfort indicator.” Each of the four temperatures on the display has a small icon that shows a neutral face if humidity is below 40%, a happy face from 40-70%, and a sad face above 70%. I live in a dry area, and I generally prefer low humidity, so I’ll probably be seeing a lot of that neutral face, even on pleasant days. Being able to customize the 40% and 70% cutoffs would have made this feature more helpful.The sensors take two AA batteries each, and are designed so they can be hung from a string, a hook, a nail, or adhesive strips. They’re labeled with a default channel, but a three-position switch in the battery compartment allows changing the channel they transmit on, if desired. There’s also a button there that allows you to transmit data instantly, rather than waiting up to 33 seconds for a scheduled update. I imagine this would be helpful in trying to position sensors or verify if batteries are good. The range seems decent; all three sensors communicate with the display no matter where they are in my home, even with several walls in between, always showing full bars on the display. The reported temperature and humidity values seem reasonably accurate, and agree well with each other, as well as with other humidity/temperature sensors I have. The sensors update at a pretty decent clip: they transmit every 31 seconds on channel 1, every 32 seconds on channel 2, and every 33 seconds on channel 3.I was also pleased to learn that the sensors are readily decoded by rtl_433. They transmit around 434 MHz, and are decoded as Oregon-THGR810 sensors. This makes it possible to log the sensor data, create a second display unit, monitor temperature remotely, or even tie things in with home automation. Interestingly, while the sensors will happily report a humidity level below 20%, the display won’t: it is currently displaying 20% for all three of my sensors, which are reporting 12%, 18%, and 18% in rtl_433. These sensors are likely not accurate below 20%, hence the limit, but it’s nice to be able to look at the raw data. I plan to use one to monitor a dry box for 3D printing filament, so it’s handy to be able to at least see humidity trends, even if the number itself may not be on the nose.

Almost Perfect
This is a small display, so not easily readable from a distance. But its small form factor is nice for a countertop it can be tucked away. I am using mine to monitor a garage-located, top freezer refrigerator. Channel 1 for the ambient garage temperature, Channel 2 with lithium batteries for the freezer compartment, and Channel 3 for the bottom, main refrigerator compartment. All 3 sensors readily connect to the base unit and can be viewed simultaneously. There are frequent temperature fluctuations — likely in the refrigerator and not due to the thermometer sensors. One star off for two reasons. (1) It would be great if the unit displayed max and min temperatures, so I could tell if my stored food was exposed to unsafe temperatures. You can set an alarm, but not sure if I will hear it. (2) My other criticism is that while a USB power cable is provided for a handy household outlet plug-in, despite the photos showing a small, 5 volt 1 amp wall charger, this unit does not come with one. Plenty of cheap options on Amazon, so why not just include one OR clearly state it is not included? But this unit is very reasonably priced, especially with a 15% promotional discount, which I applied to buying the wall charger shown in my photo.

replacement of old. the 3 different temps are what I was looking for. 1 outside, 1 in garage and the inside temp. works great. easy to see. accuracy is great and ease to use.

Der Begriff Wetterstation ist vielleicht etwas hochgegriffen, es handelt sich eher um eine schlichte Anzeige von Temperatur und Luftfeuchte. Doch damit entspricht es genau meinen Anforderungen, um diese Werte an mehreren Stellen im Wohnmobil zu kontrollieren. Und mit den 3 externen Sensoren sind alle kritischen Bereiche erfasst.Das Einrichten ist sehr einfach, nur Batterien einlegen und starten, das war’s schon. Alle Sensoren funktionieren zuverlässig und ausreichend genau. Ich bin sehr zufrieden damit.

We purchased this weather station to assist in keeping track of temperatures for various areas in and around our property.We like that we can see at a glance what the temperature is in our coldroom, basement and outside without having to go to those areas to check.The outside monitor we made sure was protected from the elements. It has worked well with lithium batteries even during our coldest temperatures.Quality is excellent.Would highly recommend.