Home / Wiring / SIT-6E At what temperature does the SIT-6E sensor activate? SIT-6E The SIT-6E activates when temperatures drop to 38 degrees or less. Underfloor Heating Thermostats Heated Floors Further Questions? Miscellaneous questions - Why is my sensor still activated when it stopped snowing? - At what temperature does the SIT-6E sensor activate? Installation - How far from the controller can the SIT-6E sensor be placed? - Installing the SIT-6E Wiring - What gauge wire should be used for the SIT-6E? - Is the SIT-6E sensor high or low voltage?