I just ordered the 4 in 1. I'll post a followup after we've used it a bit.
When I first saw this post, I was intrigued, but did not see a need. But we have an old in/out temp, humidity and pressure "weather" station in our Fleet that has acted up lately. Currently there are no weather stations with pressure that are small enough (and backlit to save batteries) to replace it. We like to have a quick-look at the outdoor temp and humidity and the indoor humidity, so I can now replace it with just an in/out temp and humidity display. Pressure is fun - it shows mostly our elevation change while we are driving and it's a barometer at night. Bluetooth on the cell is fine for pressure and it also lets us get outside humidity while driving
Edited by Jack, 14 February 2021 - 10:24 PM.