Pressure Plates

A Pressure Plate is used to activate mechanisms through wires when someone steps on it. The plate sits partially hidden on top of blocks.

Pressure Plates allow you to see laid wires when held.

Plates can be purchased from a Mechanic or taken from a natural source -- starting from 1.1 they are randomly generated on the map during world creation. Caution should be used, however, as they are typically found connected to boulder or dart traps.

Pressure Plates are a great tool for opening and closing doors without having to click on them.

The color of naturally spawned Pressure Plates seems to be random.