Pressure Plates

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

Pressure Plate 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 creating of worlds. 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.