The mechanical Time Switch of the present day is often a marvel of ingenuity. The designer, however, starts off with a very big handicap: the elimination of the effects of inertia. It is to this factor more than anything else that errors in fractional second exposures must be attributed.
Here is an interesting Timer Switch that uses your geography to decide when it is time to turn on and off. The Aube Solar Timer Switch is programmed with your city’s location via longitude/latitude and will automatically adjust itself throughout the seasons to turn on your lights for you in the evening and turn them off in the morning.
