Quick Menu Wiring What gauge wire should be used for the CIT-1? Is the CIT-1 sensor high or low voltage? Installation Installation of the CIT-1 How far from the controller can the CIT-1 sensor be placed? Miscellaneous questions At what temperature does the CIT-1 sensor activate? What gauge wire should be used for the 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’.