Hi joshhawk,
I think I really do have it now (honest)
101010110101 Preamble
0 ?Unknown. Possible extra data bit OR device ID (when more than one transmitter used)
xxxxxxxxxxx Data bits.
If number <=100 then it's humidity.
If number >=300 then subtract 500 and divide by 10 to get Centegrade temperature,
01 Postamble