Payment Options: Money Order, Cashier's Check, Personal Check,
**** NEW NEW ****
In version # 3 there are additional configuration options and some general refinements to the programming/configuration interface of the thermostat that are not present in version # 1 OR # 2
The differences between the 3 versions of firmware are so significant that I can not go into all of them. There are so many more configuration options available and the Auto/Off feature of the vent, hum, dehum, etc. (as long as those terminals are activated) are all there when you choose "more" on the touch pad.
**** COMES WITH OUTDOOR SENSOR*****
*Inside Remote Sensor. The Temperature In "Other" Parts Of The Home. To Purchase**39.95**
Brand New In a Factory Box. includes the thermostat and the equipment interface box and outside sensor.
YTH9421C-1010 Version # 3
Box includes the Thermostat - TH9421C1004 "AND" the Equipment Interface Module -THM5421C1008
and the outside sensor