TanWill Turn On At 35 Degrees And Shut Off At 45.It Is Used For Homes And Farm Applications Such As Areas Of Stock Tank De-Icers Pond De-Icier Unheated Rooms Pump Houses Thermostat.Will Turn On At 35 Degrees And Shut Off At 45.It Is Used For Homes And Farm Applications Such As Areas Of Stock Tank De-Icers Pond De-Icier Unheated Rooms Pump Houses Plastic Wire .