With a timer or time switch you can decide in advance how long you want an appliance such as a lamp or garden sprinkler to run for. We have timers and time switches for indoor or outdoor use. A short-term time switch is a useful safety device for making sure that appliances such as irons and coffee makers don't get left on. Twilight switches are a good way of automatically switching your lights on and off depending on the ambient light conditions. Twilight switches can be adjusted to come on and go off in accordance with your personal preferences. Other plug-in devices in this section include surge protectors which offer an extra level of protection against voltage surges.