In total we have five of these devices placed around the house. The latest two being recently bought as a "two pack".The yare so simple to connect to a mobile device, needed if monitoring, recording, graphing and any offset needs to be applied. The mobile app can also update the firmware, if applicable, and has done so on more than one occasion with ours.The display for each unit is large and easy enough to read no backlight tho. There is a single button on the top, to switch between imperial and metric. Whilst you can read the RH and temp, along with mins and max of each, you will need to use the app for your phone connected to the device to read information like the dew point and to see graphically trends etc.If you buy more than one device at a time I strongly suggest just trying to set one up at a time. Especially when connecting and pairing it with the app on your phone. They do NOT have a MAC code for each device, so I set one up at a time, leaving the batteries out of the others, and when that one is connected we then place a label with its location on the back.If you try and connect all of them at the same time, and the yare grouped together, it is difficult to know which units display within the app relates to which unit.See my photos of what is contained in the "two pack" box and also how we have ours setup, and labelled.Looking at the graphical information we can see "averages" or set to show "highest" or "lowest" temperatures.The one noted as being in the rear garden is under a canopy and away from prevailing winds.The Bluetooth range is typical of what you would expect. We live in a larger house, so no one place can reach them all. That is not a big deal, it just means I will access and update the information in the app as I feel is appropriate.Remember these are not Wi-Fi, they are BT in their connection. So manual updating is necessary for the app to be updated. We can update ours from the rear garden, or the attached garage on the side of the house, through the adjoining wall, the one on the rear garden, from a window in the room adjacent to the garden.I have had several of ours and used them continually for a few years. The batteries last a long time, with an indicator within the app showing how much drain the batteries have.I did set an offset for the one in the kitchen, about -1.5c. That was so it would agree with the rather inaccurate Hive unit, that controls our central heating. Along with the one in garage, where our boiler is, we can ensure that the frost guard settings are working as needed. To protect the boiler and the sytem.The app on the phone is good, if a little bloated. Everything gets installed, meaning if you only have these Govee devices then you have to accept that it can be used to control so much more .Not a problem, just mentioning that.There is nothing that I can consider negative about these devices. Understanding the limitations of BT and its range etc, then all is good.Overall, I very much recommend them.I do hope that this review has been helpful.Happy shopping.