Temperature and humidity sensor based on AT90CAN32, DS1820 for temperature and HIH4000 for humidity.
Schematic and PCB design is done with Kicad, source files can be found on github
If you don't use Kicad, you can find the schematic as pdf file here
The firmware can be found on git hub.
The timer is set on two registers (#2 is MSB, #3 is LSB) so you can set the value in second from 0 to 65535 via WORKS:
The module has no decision matrix.