On 3/26/2011 7:22 AM, Karl Townsend wrote:
I'm getting four more digital thermostats from Mcmaster Carr. Its a
Johnson controls A419 unit. This makes eight units on my place. I want
to get spare sensors and I'm thinking this must just be a
thermistor??? I see it can be ordered from the maufacturer, but I know
it will be a rip off price. Ideas for Digikey, etc.?

Many years ago, I got good service from RCD.

http://www.rcd-comp.com/rcd/rcdpdf/ATB-ATS-PTB.pdf


Kevin Gallimore