A calendar timer mechanism has an OFF mode for turning off all objects to be controlled, which include a heater, a display panel, and motors, an ON mode for turning on all the objects to be controlled, and at least two energy-saving modes for selectively turning off the objects to be controlled or turning on the objects to be controlled at a lower power consumption rate. Transitional times between at least three of the OFF mode, the ON mode, and the energy-saving modes can be set as desired.