Designed for internally wired heated towel rails Our biggest seller just got better. Now with 3 fixed cycles designed to fit any household to control Heated Towel rails. The new model offers 5 modes of operation. A one shot 3 hour timer every time the button is pressed. 5 hours once a day cycle. 4 hours twice a day cycle. 6 hours twice a day cycle. Stay on mode. Also new is boost mode, if the button is pressed on any cycles the towel rail runs for an extra 4 hours and then returns to the normal cycle.