Home / Wiring / CIT-1 What gauge wire should be used for the CIT-1? CIT-1 12 AWG 3-wire jacketed cable should be used when extending over 500’ from the controller up to 2000’. 18 AWG 3-wire jacketed cable should be used up to 500’. Underfloor Heating Thermostats Heated Floors Further Questions? Miscellaneous questions Can I upgrade to the 7iE? At what temperature does the CIT-1 sensor activate? Programming Preparing for your project What kind of heating is the 7iE compatible with? What is the maximum load of the 7iE Thermostat? What are the dimensions of the 7iE Thermostat? Wiring What is the maximum load of the 7iE Thermostat? Can I upgrade to the 7iE? What gauge wire should be used for the CIT-1? Is the CIT-1 sensor high or low voltage? Installation Can I upgrade to the 7iE? How far from the controller can the CIT-1 sensor be placed? Installation of the CIT-1