The first one looks great and the price is excellent, especially with the use of a common AAA battery.
I don’t see a temper sensor on it, but for me at least its not needed.
What kind of range did you get indoors?
I’ve ordered this one for leakage detection to place near my washing machine and refrigerator since its the only one i’ve found which (supposedly) sends a low voltage alert:
Now i’m looking for a low power stand-alone learning RF receiver which will trigger a wireless motor+battery device that will unlock all the internal doors in the house when someone is home.