Originally Posted by rockinmarty
The ones I got are in Celcius. but have not explored the functions yet. I'll look it up when I have 2 minutes.
From what I read the REX does not have a manual mode (well it didn't a about a year ago anyway). The other option I know of for a cheap PID is the Sestos, these are more inline with the Auber PID but still only read in °C and I am currently dealling with the control period acting weird under 10 secs (seems like a coding issue that anything under 10 seconds programes it for 8 seconds or 70 seconds!)