The package includes one digital timer instruction manual and four insulated connecting thimbles. This 24-hour timer switch is suitable for water heaters, Water dispensers, streetlamps, Staircase lamps, Advertising lamp boxes, Breed aquatics, Irrigate, Office power auto control. In anywhere need time control in civilian, home or industrial. It can be used to set 17 programs to control the on and off of electric appliances in 24 hours. It can be programmed to avoid the peak of power, and it can distribute power in time limit to save energy.