gtblum Posted December 20, 2009 Report Share Posted December 20, 2009 Click to Enlarge 29.89 KB Link to comment Share on other sites More sharing options...
RobC Posted December 20, 2009 Report Share Posted December 20, 2009 Two thermistor housings, either for a boiler, equipment that requires exterior temperature input or possibly for an outside temperature display at the thermostat. Not sure why they'd use two, there is plenty of room to accommodate more than one sensor. Did the home have a boiler? Next time you see one, unscrew the center screw cover and have a look inside. Link to comment Share on other sites More sharing options...
gtblum Posted December 20, 2009 Author Report Share Posted December 20, 2009 Thanks Rob, I see it now in the other thread I posted today. Link to comment Share on other sites More sharing options...
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