If you’re looking for temperature/humidity sensors you may now consider the Ambient Weather F007TH. It’s not the lowest cost sensor out there but I believe it has a longer range than many of the others. The latest EXT2 firmware for the RFXtrx433e decodes signals from this unit. I’ve found it to be able to be received over longer distances and even from the inside of a freezer. The one from Banggood is very inexpensive but isn’t really good for outdoor use. The unit has gaskets but when I placed one outside it got lots of condensation inside.
No, I don’t sell these things and have no connection to anyone who does