Announcement
Collapse
No announcement yet.
This should be a sticky
Collapse
X
-
I don't have a link anymore to the document with all the colors of the cable to the DB9. The first time I hooked up my Thermostat I used the Radio Shack connector. I thought I had a bad thermostat because the communication was quite flaky. I recently rewired my thermostat to an HAI rj11 to DB9 connector. This is the same connector used to program an HAI panel. It actually does all of the jumpers for you. You only have to figure out the correct order for the 4 wires from the thermostat. It took a little thinking and looking at the pinouts of the HAI adaptor but once I figured it out it worked great.
I'd ten times rather use an RJ11 or RJ45 connection than to use some finnicky serial end that you have to crimp up yourself.
-Shane
Comment
Comment