Modern hardware designs use active electronics rather than physical switch contacts with the potential to control many computers on a common system backbone.

The vibrator was a device with switch contacts on flexible metal strips.

The switch contacts are on a springy iron arm, which holds them closed.

If the mode 3 device is unplugged, the switch contacts maintain line connection to the other devices.

A switch contact on the switching valve will close when the valve is in the secondary position.

The switch contacts are in the center and around the circumference of the bowl.

In this case the fuse protects the spur (equipment supply) cable and any switch contacts.

The resulting motion is applied, either directly or through amplifying levers, to a set of switch contacts.

Their reliability record remains good, but there is always some failure rate with mechanical switch contacts.

The switch contacts are moved by the electromagnet rather than by hand.