How to Program a Digital Plug-in Timer Switch Images

A digital plug-in timer switch can be set to turn appliances on and off at different times of the day. When plugged into a lamp or radio, for example, digital timers can enhance home security by turning the electronics on for a brief period while you are away.

Lights and sounds randomly turning on and off in a home creates the appearance that someone is home. Digital timers let you program the on/off functions down to the minute. Digital timers have different features, but the basic operating principles are the same.

Plug the power cord for the electronic item into the socket on the back of the digital timer. Plug the timer into a wall outlet. The digital readout will repeatedly blink "12:00."

Press "Hour" and "Minute" buttons to set the current time of day. You might need to cycle through 12 hours by repeatedly pressing the "Hour" button to set an evening time.

Slide the mode switch on the timer to "Program" or "On" and press the "Week" or "Day" button to select a day of the week for activating the connected item.

Press the "Hour" and "Minute" buttons to set the time you want the item to turn on.

Press the "Program" or "Off" button again to enter the time you want the item to shut off. On timers that can be programmed for a full week, press the "Day" button to advance to the next day and repeat the sequence for setting on and off times.